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Developer Documentation
- Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
- Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
- PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
/mod/forum/ -> lib.php (source)
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* @package mod_forum
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
use mod_forum\local\entities\forum as forum_entity;
defined('MOODLE_INTERNAL') || die();
/** Include required files */
require_once(__DIR__ . '/deprecatedlib.php');
require_once($CFG->libdir.'/filelib.php');
/// CONSTANTS ///////////////////////////////////////////////////////////
define('FORUM_MODE_FLATOLDEST', 1);
define('FORUM_MODE_FLATNEWEST', -1);
define('FORUM_MODE_THREADED', 2);
define('FORUM_MODE_NESTED', 3);
define('FORUM_MODE_NESTED_V2', 4);
define('FORUM_CHOOSESUBSCRIBE', 0);
define('FORUM_FORCESUBSCRIBE', 1);
define('FORUM_INITIALSUBSCRIBE', 2);
define('FORUM_DISALLOWSUBSCRIBE',3);
/**
* FORUM_TRACKING_OFF - Tracking is not available for this forum.
*/
define('FORUM_TRACKING_OFF', 0);
/**
* FORUM_TRACKING_OPTIONAL - Tracking is based on user preference.
*/
define('FORUM_TRACKING_OPTIONAL', 1);
/**
* FORUM_TRACKING_FORCED - Tracking is on, regardless of user setting.
* Treated as FORUM_TRACKING_OPTIONAL if $CFG->forum_allowforcedreadtracking is off.
*/
define('FORUM_TRACKING_FORCED', 2);
define('FORUM_MAILED_PENDING', 0);
define('FORUM_MAILED_SUCCESS', 1);
define('FORUM_MAILED_ERROR', 2);
if (!defined('FORUM_CRON_USER_CACHE')) {
/** Defines how many full user records are cached in forum cron. */
define('FORUM_CRON_USER_CACHE', 5000);
}
/**
* FORUM_POSTS_ALL_USER_GROUPS - All the posts in groups where the user is enrolled.
*/
define('FORUM_POSTS_ALL_USER_GROUPS', -2);
define('FORUM_DISCUSSION_PINNED', 1);
define('FORUM_DISCUSSION_UNPINNED', 0);
/// STANDARD FUNCTIONS ///////////////////////////////////////////////////////////
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will create a new instance and return the id number
* of the new instance.
*
* @param stdClass $forum add forum instance
* @param mod_forum_mod_form $mform
* @return int intance id
*/
function forum_add_instance($forum, $mform = null) {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/forum/locallib.php');
$forum->timemodified = time();
if (empty($forum->assessed)) {
$forum->assessed = 0;
}
if (empty($forum->ratingtime) or empty($forum->assessed)) {
$forum->assesstimestart = 0;
$forum->assesstimefinish = 0;
}
$forum->id = $DB->insert_record('forum', $forum);
$modcontext = context_module::instance($forum->coursemodule);
if ($forum->type == 'single') { // Create related discussion.
$discussion = new stdClass();
$discussion->course = $forum->course;
$discussion->forum = $forum->id;
$discussion->name = $forum->name;
$discussion->assessed = $forum->assessed;
$discussion->message = $forum->intro;
$discussion->messageformat = $forum->introformat;
$discussion->messagetrust = trusttext_trusted(context_course::instance($forum->course));
$discussion->mailnow = false;
$discussion->groupid = -1;
$message = '';
$discussion->id = forum_add_discussion($discussion, null, $message);
if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
// Ugly hack - we need to copy the files somehow.
$discussion = $DB->get_record('forum_discussions', array('id'=>$discussion->id), '*', MUST_EXIST);
$post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
$options = array('subdirs'=>true); // Use the same options as intro field!
$post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
$DB->set_field('forum_posts', 'message', $post->message, array('id'=>$post->id));
}
}
forum_update_calendar($forum, $forum->coursemodule);
forum_grade_item_update($forum);
$completiontimeexpected = !empty($forum->completionexpected) ? $forum->completionexpected : null;
\core_completion\api::update_completion_date_event($forum->coursemodule, 'forum', $forum->id, $completiontimeexpected);
return $forum->id;
}
/**
* Handle changes following the creation of a forum instance.
* This function is typically called by the course_module_created observer.
*
* @param object $context the forum context
* @param stdClass $forum The forum object
* @return void
*/
function forum_instance_created($context, $forum) {
if ($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) {
$users = \mod_forum\subscriptions::get_potential_subscribers($context, 0, 'u.id, u.email');
foreach ($users as $user) {
\mod_forum\subscriptions::subscribe_user($user->id, $forum, $context);
}
}
}
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will update an existing instance with new data.
*
* @global object
* @param object $forum forum instance (with magic quotes)
* @return bool success
*/
function forum_update_instance($forum, $mform) {
global $CFG, $DB, $OUTPUT, $USER;
require_once($CFG->dirroot.'/mod/forum/locallib.php');
$forum->timemodified = time();
$forum->id = $forum->instance;
if (empty($forum->assessed)) {
$forum->assessed = 0;
}
if (empty($forum->ratingtime) or empty($forum->assessed)) {
$forum->assesstimestart = 0;
$forum->assesstimefinish = 0;
}
$oldforum = $DB->get_record('forum', array('id'=>$forum->id));
// MDL-3942 - if the aggregation type or scale (i.e. max grade) changes then recalculate the grades for the entire forum
// if scale changes - do we need to recheck the ratings, if ratings higher than scale how do we want to respond?
// for count and sum aggregation types the grade we check to make sure they do not exceed the scale (i.e. max score) when calculating the grade
$updategrades = false;
if ($oldforum->assessed <> $forum->assessed) {
// Whether this forum is rated.
$updategrades = true;
}
if ($oldforum->scale <> $forum->scale) {
// The scale currently in use.
$updategrades = true;
}
if (empty($oldforum->grade_forum) || $oldforum->grade_forum <> $forum->grade_forum) {
// The whole forum grading.
$updategrades = true;
}
if ($updategrades) {
forum_update_grades($forum); // Recalculate grades for the forum.
}
if ($forum->type == 'single') { // Update related discussion and post.
$discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id), 'timemodified ASC');
if (!empty($discussions)) {
if (count($discussions) > 1) {
echo $OUTPUT->notification(get_string('warnformorepost', 'forum'));
}
$discussion = array_pop($discussions);
} else {
// try to recover by creating initial discussion - MDL-16262
$discussion = new stdClass();
$discussion->course = $forum->course;
$discussion->forum = $forum->id;
$discussion->name = $forum->name;
$discussion->assessed = $forum->assessed;
$discussion->message = $forum->intro;
$discussion->messageformat = $forum->introformat;
$discussion->messagetrust = true;
$discussion->mailnow = false;
$discussion->groupid = -1;
$message = '';
forum_add_discussion($discussion, null, $message);
if (! $discussion = $DB->get_record('forum_discussions', array('forum'=>$forum->id))) {
throw new \moodle_exception('cannotadd', 'forum');
}
}
if (! $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost))) {
throw new \moodle_exception('cannotfindfirstpost', 'forum');
}
$cm = get_coursemodule_from_instance('forum', $forum->id);
$modcontext = context_module::instance($cm->id, MUST_EXIST);
$post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
$post->subject = $forum->name;
$post->message = $forum->intro;
$post->messageformat = $forum->introformat;
$post->messagetrust = trusttext_trusted($modcontext);
$post->modified = $forum->timemodified;
$post->userid = $USER->id; // MDL-18599, so that current teacher can take ownership of activities.
if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
// Ugly hack - we need to copy the files somehow.
$options = array('subdirs'=>true); // Use the same options as intro field!
$post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
}
\mod_forum\local\entities\post::add_message_counts($post);
$DB->update_record('forum_posts', $post);
$discussion->name = $forum->name;
$DB->update_record('forum_discussions', $discussion);
}
$DB->update_record('forum', $forum);
$modcontext = context_module::instance($forum->coursemodule);
if (($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) && ($oldforum->forcesubscribe <> $forum->forcesubscribe)) {
$users = \mod_forum\subscriptions::get_potential_subscribers($modcontext, 0, 'u.id, u.email', '');
foreach ($users as $user) {
\mod_forum\subscriptions::subscribe_user($user->id, $forum, $modcontext);
}
}
forum_update_calendar($forum, $forum->coursemodule);
forum_grade_item_update($forum);
$completiontimeexpected = !empty($forum->completionexpected) ? $forum->completionexpected : null;
\core_completion\api::update_completion_date_event($forum->coursemodule, 'forum', $forum->id, $completiontimeexpected);
return true;
}
/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
*
* @global object
* @param int $id forum instance id
* @return bool success
*/
function forum_delete_instance($id) {
global $DB;
if (!$forum = $DB->get_record('forum', array('id'=>$id))) {
return false;
}
if (!$cm = get_coursemodule_from_instance('forum', $forum->id)) {
return false;
}
if (!$course = $DB->get_record('course', array('id'=>$cm->course))) {
return false;
}
$context = context_module::instance($cm->id);
// now get rid of all files
$fs = get_file_storage();
$fs->delete_area_files($context->id);
$result = true;
\core_completion\api::update_completion_date_event($cm->id, 'forum', $forum->id, null);
// Delete digest and subscription preferences.
$DB->delete_records('forum_digests', array('forum' => $forum->id));
$DB->delete_records('forum_subscriptions', array('forum'=>$forum->id));
$DB->delete_records('forum_discussion_subs', array('forum' => $forum->id));
if ($discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id))) {
foreach ($discussions as $discussion) {
if (!forum_delete_discussion($discussion, true, $course, $cm, $forum)) {
$result = false;
}
}
}
forum_tp_delete_read_records(-1, -1, -1, $forum->id);
forum_grade_item_delete($forum);
// We must delete the module record after we delete the grade item.
if (!$DB->delete_records('forum', array('id'=>$forum->id))) {
$result = false;
}
return $result;
}
/**
* Indicates API features that the forum supports.
*
* @uses FEATURE_GROUPS
* @uses FEATURE_GROUPINGS
* @uses FEATURE_MOD_INTRO
* @uses FEATURE_COMPLETION_TRACKS_VIEWS
* @uses FEATURE_COMPLETION_HAS_RULES
* @uses FEATURE_GRADE_HAS_GRADE
* @uses FEATURE_GRADE_OUTCOMES
* @param string $feature
* @return mixed True if module supports feature, false if not, null if doesn't know or string for the module purpose.
*/
function forum_supports($feature) {
switch($feature) {
case FEATURE_GROUPS: return true;
case FEATURE_GROUPINGS: return true;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
case FEATURE_COMPLETION_HAS_RULES: return true;
case FEATURE_GRADE_HAS_GRADE: return true;
case FEATURE_GRADE_OUTCOMES: return true;
case FEATURE_RATE: return true;
case FEATURE_BACKUP_MOODLE2: return true;
case FEATURE_SHOW_DESCRIPTION: return true;
case FEATURE_PLAGIARISM: return true;
case FEATURE_ADVANCED_GRADING: return true;
case FEATURE_MOD_PURPOSE: return MOD_PURPOSE_COLLABORATION;
default: return null;
}
}
/**
* Create a message-id string to use in the custom headers of forum notification emails
*
* message-id is used by email clients to identify emails and to nest conversations
*
* @param int $postid The ID of the forum post we are notifying the user about
* @param int $usertoid The ID of the user being notified
* @return string A unique message-id
*/
function forum_get_email_message_id($postid, $usertoid) {
return generate_email_messageid(hash('sha256', $postid . 'to' . $usertoid));
}
/**
*
* @param object $course
* @param object $user
* @param object $mod TODO this is not used in this function, refactor
* @param object $forum
* @return object A standard object with 2 variables: info (number of posts for this user) and time (last modified)
*/
function forum_user_outline($course, $user, $mod, $forum) {
global $CFG;
require_once("$CFG->libdir/gradelib.php");
$gradeinfo = '';
$gradetime = 0;
$grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
if (!empty($grades->items[0]->grades)) {
// Item 0 is the rating.
$grade = reset($grades->items[0]->grades);
$gradetime = max($gradetime, grade_get_date_for_user_grade($grade, $user));
if (!$grade->hidden || has_capability('moodle/grade:viewhidden', context_course::instance($course->id))) {
$gradeinfo .= get_string('gradeforrating', 'forum', $grade) . html_writer::empty_tag('br');
} else {
$gradeinfo .= get_string('gradeforratinghidden', 'forum') . html_writer::empty_tag('br');
}
}
// Item 1 is the whole-forum grade.
if (!empty($grades->items[1]->grades)) {
$grade = reset($grades->items[1]->grades);
$gradetime = max($gradetime, grade_get_date_for_user_grade($grade, $user));
if (!$grade->hidden || has_capability('moodle/grade:viewhidden', context_course::instance($course->id))) {
$gradeinfo .= get_string('gradeforwholeforum', 'forum', $grade) . html_writer::empty_tag('br');
} else {
$gradeinfo .= get_string('gradeforwholeforumhidden', 'forum') . html_writer::empty_tag('br');
}
}
$count = forum_count_user_posts($forum->id, $user->id);
if ($count && $count->postcount > 0) {
$info = get_string("numposts", "forum", $count->postcount);
$time = $count->lastpost;
if ($gradeinfo) {
$info .= ', ' . $gradeinfo;
$time = max($time, $gradetime);
}
return (object) [
'info' => $info,
'time' => $time,
];
} else if ($gradeinfo) {
return (object) [
'info' => $gradeinfo,
'time' => $gradetime,
];
}
return null;
}
/**
* @global object
* @global object
* @param object $coure
* @param object $user
* @param object $mod
* @param object $forum
*/
function forum_user_complete($course, $user, $mod, $forum) {
global $CFG, $USER;
require_once("$CFG->libdir/gradelib.php");
$getgradeinfo = function($grades, string $type) use ($course): string {
global $OUTPUT;
if (empty($grades)) {
return '';
}
$result = '';
$grade = reset($grades);
if (!$grade->hidden || has_capability('moodle/grade:viewhidden', context_course::instance($course->id))) {
$result .= $OUTPUT->container(get_string("gradefor{$type}", "forum", $grade));
if ($grade->str_feedback) {
$result .= $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
}
} else {
$result .= $OUTPUT->container(get_string("gradefor{$type}hidden", "forum"));
}
return $result;
};
$grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
// Item 0 is the rating.
if (!empty($grades->items[0]->grades)) {
echo $getgradeinfo($grades->items[0]->grades, 'rating');
}
// Item 1 is the whole-forum grade.
if (!empty($grades->items[1]->grades)) {
echo $getgradeinfo($grades->items[1]->grades, 'wholeforum');
}
if ($posts = forum_get_user_posts($forum->id, $user->id)) {
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id)) {
throw new \moodle_exception('invalidcoursemodule');
}
$context = context_module::instance($cm->id);
$discussions = forum_get_user_involved_discussions($forum->id, $user->id);
$posts = array_filter($posts, function($post) use ($discussions) {
return isset($discussions[$post->discussion]);
});
$entityfactory = mod_forum\local\container::get_entity_factory();
$rendererfactory = mod_forum\local\container::get_renderer_factory();
$postrenderer = $rendererfactory->get_posts_renderer();
echo $postrenderer->render(
$USER,
[$forum->id => $entityfactory->get_forum_from_stdclass($forum, $context, $cm, $course)],
array_map(function($discussion) use ($entityfactory) {
return $entityfactory->get_discussion_from_stdclass($discussion);
}, $discussions),
array_map(function($post) use ($entityfactory) {
return $entityfactory->get_post_from_stdclass($post);
}, $posts)
);
} else {
echo "<p>".get_string("noposts", "forum")."</p>";
}
}
/**
* @deprecated since Moodle 3.3, when the block_course_overview block was removed.
*/
function forum_filter_user_groups_discussions() {
throw new coding_exception('forum_filter_user_groups_discussions() can not be used any more and is obsolete.');
}
/**
* Returns whether the discussion group is visible by the current user or not.
*
* @since Moodle 2.8, 2.7.1, 2.6.4
* @param cm_info $cm The discussion course module
* @param int $discussiongroupid The discussion groupid
* @return bool
*/
function forum_is_user_group_discussion(cm_info $cm, $discussiongroupid) {
if ($discussiongroupid == -1 || $cm->effectivegroupmode != SEPARATEGROUPS) {
return true;
}
if (isguestuser()) {
return false;
}
if (has_capability('moodle/site:accessallgroups', context_module::instance($cm->id)) ||
in_array($discussiongroupid, $cm->get_modinfo()->get_groups($cm->groupingid))) {
return true;
}
return false;
}
/**
* @deprecated since Moodle 3.3, when the block_course_overview block was removed.
*/
function forum_print_overview() {
throw new coding_exception('forum_print_overview() can not be used any more and is obsolete.');
}
/**
* Given a course and a date, prints a summary of all the new
* messages posted in the course since that date
*
* @global object
* @global object
* @global object
* @uses CONTEXT_MODULE
* @uses VISIBLEGROUPS
* @param object $course
* @param bool $viewfullnames capability
* @param int $timestart
* @return bool success
*/
function forum_print_recent_activity($course, $viewfullnames, $timestart) {
global $USER, $DB, $OUTPUT;
// do not use log table if possible, it may be huge and is expensive to join with other tables
$userfieldsapi = \core_user\fields::for_userpic();
$allnamefields = $userfieldsapi->get_sql('u', false, '', 'duserid', false)->selects;
if (!$posts = $DB->get_records_sql("SELECT p.*,
f.course, f.type AS forumtype, f.name AS forumname, f.intro, f.introformat, f.duedate,
f.cutoffdate, f.assessed AS forumassessed, f.assesstimestart, f.assesstimefinish,
f.scale, f.grade_forum, f.maxbytes, f.maxattachments, f.forcesubscribe,
f.trackingtype, f.rsstype, f.rssarticles, f.timemodified, f.warnafter, f.blockafter,
f.blockperiod, f.completiondiscussions, f.completionreplies, f.completionposts,
f.displaywordcount, f.lockdiscussionafter, f.grade_forum_notify,
d.name AS discussionname, d.firstpost, d.userid AS discussionstarter,
d.assessed AS discussionassessed, d.timemodified, d.usermodified, d.forum, d.groupid,
d.timestart, d.timeend, d.pinned, d.timelocked,
$allnamefields
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
JOIN {user} u ON u.id = p.userid
WHERE p.created > ? AND f.course = ? AND p.deleted <> 1
ORDER BY p.id ASC", array($timestart, $course->id))) { // order by initial posting date
return false;
}
$modinfo = get_fast_modinfo($course);
$strftimerecent = get_string('strftimerecent');
$managerfactory = mod_forum\local\container::get_manager_factory();
$entityfactory = mod_forum\local\container::get_entity_factory();
$discussions = [];
$capmanagers = [];
$printposts = [];
foreach ($posts as $post) {
if (!isset($modinfo->instances['forum'][$post->forum])) {
// not visible
continue;
}
$cm = $modinfo->instances['forum'][$post->forum];
if (!$cm->uservisible) {
continue;
}
// Get the discussion. Cache if not yet available.
if (!isset($discussions[$post->discussion])) {
// Build the discussion record object from the post data.
$discussionrecord = (object)[
'id' => $post->discussion,
'course' => $post->course,
'forum' => $post->forum,
'name' => $post->discussionname,
'firstpost' => $post->firstpost,
'userid' => $post->discussionstarter,
'groupid' => $post->groupid,
'assessed' => $post->discussionassessed,
'timemodified' => $post->timemodified,
'usermodified' => $post->usermodified,
'timestart' => $post->timestart,
'timeend' => $post->timeend,
'pinned' => $post->pinned,
'timelocked' => $post->timelocked
];
// Build the discussion entity from the factory and cache it.
$discussions[$post->discussion] = $entityfactory->get_discussion_from_stdclass($discussionrecord);
}
$discussionentity = $discussions[$post->discussion];
// Get the capability manager. Cache if not yet available.
if (!isset($capmanagers[$post->forum])) {
$context = context_module::instance($cm->id);
$coursemodule = $cm->get_course_module_record();
// Build the forum record object from the post data.
$forumrecord = (object)[
'id' => $post->forum,
'course' => $post->course,
'type' => $post->forumtype,
'name' => $post->forumname,
'intro' => $post->intro,
'introformat' => $post->introformat,
'duedate' => $post->duedate,
'cutoffdate' => $post->cutoffdate,
'assessed' => $post->forumassessed,
'assesstimestart' => $post->assesstimestart,
'assesstimefinish' => $post->assesstimefinish,
'scale' => $post->scale,
'grade_forum' => $post->grade_forum,
'maxbytes' => $post->maxbytes,
'maxattachments' => $post->maxattachments,
'forcesubscribe' => $post->forcesubscribe,
'trackingtype' => $post->trackingtype,
'rsstype' => $post->rsstype,
'rssarticles' => $post->rssarticles,
'timemodified' => $post->timemodified,
'warnafter' => $post->warnafter,
'blockafter' => $post->blockafter,
'blockperiod' => $post->blockperiod,
'completiondiscussions' => $post->completiondiscussions,
'completionreplies' => $post->completionreplies,
'completionposts' => $post->completionposts,
'displaywordcount' => $post->displaywordcount,
'lockdiscussionafter' => $post->lockdiscussionafter,
'grade_forum_notify' => $post->grade_forum_notify
];
// Build the forum entity from the factory.
$forumentity = $entityfactory->get_forum_from_stdclass($forumrecord, $context, $coursemodule, $course);
// Get the capability manager of this forum and cache it.
$capmanagers[$post->forum] = $managerfactory->get_capability_manager($forumentity);
}
$capabilitymanager = $capmanagers[$post->forum];
// Get the post entity.
$postentity = $entityfactory->get_post_from_stdclass($post);
// Check if the user can view the post.
if ($capabilitymanager->can_view_post($USER, $discussionentity, $postentity)) {
$printposts[] = $post;
}
}
unset($posts);
if (!$printposts) {
return false;
}
echo $OUTPUT->heading(get_string('newforumposts', 'forum') . ':', 6);
$list = html_writer::start_tag('ul', ['class' => 'unlist']);
foreach ($printposts as $post) {
$subjectclass = empty($post->parent) ? ' bold' : '';
$authorhidden = forum_is_author_hidden($post, (object) ['type' => $post->forumtype]);
$list .= html_writer::start_tag('li');
$list .= html_writer::start_div('head');
$list .= html_writer::div(userdate_htmltime($post->modified, $strftimerecent), 'date');
if (!$authorhidden) {
$list .= html_writer::div(fullname($post, $viewfullnames), 'name');
}
$list .= html_writer::end_div(); // Head.
$list .= html_writer::start_div('info' . $subjectclass);
$discussionurl = new moodle_url('/mod/forum/discuss.php', ['d' => $post->discussion]);
if (!empty($post->parent)) {
$discussionurl->param('parent', $post->parent);
$discussionurl->set_anchor('p'. $post->id);
}
$post->subject = break_up_long_words(format_string($post->subject, true));
$list .= html_writer::link($discussionurl, $post->subject, ['rel' => 'bookmark']);
$list .= html_writer::end_div(); // Info.
$list .= html_writer::end_tag('li');
}
$list .= html_writer::end_tag('ul');
echo $list;
return true;
}
/**
* Update activity grades.
*
* @param object $forum
* @param int $userid specific user only, 0 means all
*/
function forum_update_grades($forum, $userid = 0): void {
global $CFG, $DB;
require_once($CFG->libdir.'/gradelib.php');
$ratings = null;
if ($forum->assessed) {
require_once($CFG->dirroot.'/rating/lib.php');
$cm = get_coursemodule_from_instance('forum', $forum->id);
$rm = new rating_manager();
$ratings = $rm->get_user_grades((object) [
'component' => 'mod_forum',
'ratingarea' => 'post',
'contextid' => \context_module::instance($cm->id)->id,
'modulename' => 'forum',
'moduleid ' => $forum->id,
'userid' => $userid,
'aggregationmethod' => $forum->assessed,
'scaleid' => $forum->scale,
'itemtable' => 'forum_posts',
'itemtableusercolumn' => 'userid',
]);
}
$forumgrades = null;
if ($forum->grade_forum) {
$sql = <<<EOF
SELECT
g.userid,
0 as datesubmitted,
g.grade as rawgrade,
g.timemodified as dategraded
FROM {forum} f
JOIN {forum_grades} g ON g.forum = f.id
WHERE f.id = :forumid
EOF;
$params = [
'forumid' => $forum->id,
];
if ($userid) {
$sql .= " AND g.userid = :userid";
$params['userid'] = $userid;
}
$forumgrades = [];
if ($grades = $DB->get_recordset_sql($sql, $params)) {
foreach ($grades as $userid => $grade) {
if ($grade->rawgrade != -1) {
$forumgrades[$userid] = $grade;
}
}
$grades->close();
}
}
forum_grade_item_update($forum, $ratings, $forumgrades);
}
/**
* Create/update grade items for given forum.
*
* @param stdClass $forum Forum object with extra cmidnumber
* @param mixed $grades Optional array/object of grade(s); 'reset' means reset grades in gradebook
*/
function forum_grade_item_update($forum, $ratings = null, $forumgrades = null): void {
global $CFG;
require_once("{$CFG->libdir}/gradelib.php");
// Update the rating.
$item = [
'itemname' => get_string('gradeitemnameforrating', 'forum', $forum),
'idnumber' => $forum->cmidnumber,
];
if (!$forum->assessed || $forum->scale == 0) {
$item['gradetype'] = GRADE_TYPE_NONE;
} else if ($forum->scale > 0) {
$item['gradetype'] = GRADE_TYPE_VALUE;
$item['grademax'] = $forum->scale;
$item['grademin'] = 0;
} else if ($forum->scale < 0) {
$item['gradetype'] = GRADE_TYPE_SCALE;
$item['scaleid'] = -$forum->scale;
}
if ($ratings === 'reset') {
$item['reset'] = true;
$ratings = null;
}
// Itemnumber 0 is the rating.
grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 0, $ratings, $item);
// Whole forum grade.
$item = [
'itemname' => get_string('gradeitemnameforwholeforum', 'forum', $forum),
// Note: We do not need to store the idnumber here.
];
if (!$forum->grade_forum) {
$item['gradetype'] = GRADE_TYPE_NONE;
} else if ($forum->grade_forum > 0) {
$item['gradetype'] = GRADE_TYPE_VALUE;
$item['grademax'] = $forum->grade_forum;
$item['grademin'] = 0;
} else if ($forum->grade_forum < 0) {
$item['gradetype'] = GRADE_TYPE_SCALE;
$item['scaleid'] = $forum->grade_forum * -1;
}
if ($forumgrades === 'reset') {
$item['reset'] = true;
$forumgrades = null;
}
// Itemnumber 1 is the whole forum grade.
grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 1, $forumgrades, $item);
}
/**
* Delete grade item for given forum.
*
* @param stdClass $forum Forum object
*/
function forum_grade_item_delete($forum) {
global $CFG;
require_once($CFG->libdir.'/gradelib.php');
grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 0, null, ['deleted' => 1]);
grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 1, null, ['deleted' => 1]);
}
/**
* Checks if scale is being used by any instance of forum.
*
* This is used to find out if scale used anywhere.
*
* @param $scaleid int
* @return boolean True if the scale is used by any forum
*/
function forum_scale_used_anywhere(int $scaleid): bool {
global $DB;
if (empty($scaleid)) {
return false;
}
return $DB->record_exists_select('forum', "scale = ? and assessed > 0", [$scaleid * -1]);
}
// SQL FUNCTIONS ///////////////////////////////////////////////////////////
/**
* Gets a post with all info ready for forum_print_post
* Most of these joins are just to get the forum id
*
* @global object
* @global object
* @param int $postid
* @return mixed array of posts or false
*/
function forum_get_post_full($postid) {
global $CFG, $DB;
$userfieldsapi = \core_user\fields::for_name();
$allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
return $DB->get_record_sql("SELECT p.*, d.forum, $allnames, u.email, u.picture, u.imagealt
FROM {forum_posts} p
JOIN {forum_discussions} d ON p.discussion = d.id
LEFT JOIN {user} u ON p.userid = u.id
WHERE p.id = ?", array($postid));
}
/**
* Gets all posts in discussion including top parent.
*
* @param int $discussionid The Discussion to fetch.
* @param string $sort The sorting to apply.
* @param bool $tracking Whether the user tracks this forum.
* @return array The posts in the discussion.
*/
function forum_get_all_discussion_posts($discussionid, $sort, $tracking = false) {
global $CFG, $DB, $USER;
$tr_sel = "";
$tr_join = "";
$params = array();
if ($tracking) {
$tr_sel = ", fr.id AS postread";
$tr_join = "LEFT JOIN {forum_read} fr ON (fr.postid = p.id AND fr.userid = ?)";
$params[] = $USER->id;
}
$userfieldsapi = \core_user\fields::for_name();
$allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
$params[] = $discussionid;
if (!$posts = $DB->get_records_sql("SELECT p.*, $allnames, u.email, u.picture, u.imagealt $tr_sel
FROM {forum_posts} p
LEFT JOIN {user} u ON p.userid = u.id
$tr_join
WHERE p.discussion = ?
ORDER BY $sort", $params)) {
return array();
}
foreach ($posts as $pid=>$p) {
if ($tracking) {
if (forum_tp_is_post_old($p)) {
$posts[$pid]->postread = true;
}
}
if (!$p->parent) {
continue;
}
if (!isset($posts[$p->parent])) {
continue; // parent does not exist??
}
if (!isset($posts[$p->parent]->children)) {
$posts[$p->parent]->children = array();
}
$posts[$p->parent]->children[$pid] =& $posts[$pid];
}
// Start with the last child of the first post.
$post = &$posts[reset($posts)->id];
$lastpost = false;
while (!$lastpost) {
if (!isset($post->children)) {
$post->lastpost = true;
$lastpost = true;
} else {
// Go to the last child of this post.
$post = &$posts[end($post->children)->id];
}
}
return $posts;
}
/**
* An array of forum objects that the user is allowed to read/search through.
*
* @global object
* @global object
* @global object
* @param int $userid
* @param int $courseid if 0, we look for forums throughout the whole site.
* @return array of forum objects, or false if no matches
* Forum objects have the following attributes:
* id, type, course, cmid, cmvisible, cmgroupmode, accessallgroups,
* viewhiddentimedposts
*/
function forum_get_readable_forums($userid, $courseid=0) {
global $CFG, $DB, $USER;
require_once($CFG->dirroot.'/course/lib.php');
if (!$forummod = $DB->get_record('modules', array('name' => 'forum'))) {
throw new \moodle_exception('notinstalled', 'forum');
}
if ($courseid) {
$courses = $DB->get_records('course', array('id' => $courseid));
} else {
// If no course is specified, then the user can see SITE + his courses.
$courses1 = $DB->get_records('course', array('id' => SITEID));
$courses2 = enrol_get_users_courses($userid, true, array('modinfo'));
$courses = array_merge($courses1, $courses2);
}
if (!$courses) {
return array();
}
$readableforums = array();
foreach ($courses as $course) {
$modinfo = get_fast_modinfo($course);
if (empty($modinfo->instances['forum'])) {
// hmm, no forums?
continue;
}
$courseforums = $DB->get_records('forum', array('course' => $course->id));
foreach ($modinfo->instances['forum'] as $forumid => $cm) {
if (!$cm->uservisible or !isset($courseforums[$forumid])) {
continue;
}
$context = context_module::instance($cm->id);
$forum = $courseforums[$forumid];
$forum->context = $context;
$forum->cm = $cm;
if (!has_capability('mod/forum:viewdiscussion', $context)) {
continue;
}
/// group access
if (groups_get_activity_groupmode($cm, $course) == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
$forum->onlygroups = $modinfo->get_groups($cm->groupingid);
$forum->onlygroups[] = -1;
}
/// hidden timed discussions
$forum->viewhiddentimedposts = true;
if (!empty($CFG->forum_enabletimedposts)) {
if (!has_capability('mod/forum:viewhiddentimedposts', $context)) {
$forum->viewhiddentimedposts = false;
}
}
/// qanda access
if ($forum->type == 'qanda'
&& !has_capability('mod/forum:viewqandawithoutposting', $context)) {
// We need to check whether the user has posted in the qanda forum.
$forum->onlydiscussions = array(); // Holds discussion ids for the discussions
// the user is allowed to see in this forum.
if ($discussionspostedin = forum_discussions_user_has_posted_in($forum->id, $USER->id)) {
foreach ($discussionspostedin as $d) {
$forum->onlydiscussions[] = $d->id;
}
}
}
$readableforums[$forum->id] = $forum;
}
unset($modinfo);
} // End foreach $courses
return $readableforums;
}
/**
* Returns a list of posts found using an array of search terms.
*
* @global object
* @global object
* @global object
* @param array $searchterms array of search terms, e.g. word +word -word
* @param int $courseid if 0, we search through the whole site
* @param int $limitfrom
* @param int $limitnum
* @param int &$totalcount
* @param string $extrasql
* @return array|bool Array of posts found or false
*/
function forum_search_posts($searchterms, $courseid, $limitfrom, $limitnum,
&$totalcount, $extrasql='') {
global $CFG, $DB, $USER;
require_once($CFG->libdir.'/searchlib.php');
$forums = forum_get_readable_forums($USER->id, $courseid);
if (count($forums) == 0) {
$totalcount = 0;
return false;
}
$now = floor(time() / 60) * 60; // DB Cache Friendly.
$fullaccess = array();
$where = array();
$params = array();
foreach ($forums as $forumid => $forum) {
$select = array();
if (!$forum->viewhiddentimedposts) {
$select[] = "(d.userid = :userid{$forumid} OR (d.timestart < :timestart{$forumid} AND (d.timeend = 0 OR d.timeend > :timeend{$forumid})))";
$params = array_merge($params, array('userid'.$forumid=>$USER->id, 'timestart'.$forumid=>$now, 'timeend'.$forumid=>$now));
}
$cm = $forum->cm;
$context = $forum->context;
if ($forum->type == 'qanda'
&& !has_capability('mod/forum:viewqandawithoutposting', $context)) {
if (!empty($forum->onlydiscussions)) {
list($discussionid_sql, $discussionid_params) = $DB->get_in_or_equal($forum->onlydiscussions, SQL_PARAMS_NAMED, 'qanda'.$forumid.'_');
$params = array_merge($params, $discussionid_params);
$select[] = "(d.id $discussionid_sql OR p.parent = 0)";
} else {
$select[] = "p.parent = 0";
}
}
if (!empty($forum->onlygroups)) {
list($groupid_sql, $groupid_params) = $DB->get_in_or_equal($forum->onlygroups, SQL_PARAMS_NAMED, 'grps'.$forumid.'_');
$params = array_merge($params, $groupid_params);
$select[] = "d.groupid $groupid_sql";
}
if ($select) {
$selects = implode(" AND ", $select);
$where[] = "(d.forum = :forum{$forumid} AND $selects)";
$params['forum'.$forumid] = $forumid;
} else {
$fullaccess[] = $forumid;
}
}
if ($fullaccess) {
list($fullid_sql, $fullid_params) = $DB->get_in_or_equal($fullaccess, SQL_PARAMS_NAMED, 'fula');
$params = array_merge($params, $fullid_params);
$where[] = "(d.forum $fullid_sql)";
}
$favjoin = "";
if (in_array('starredonly:on', $searchterms)) {
$usercontext = context_user::instance($USER->id);
$ufservice = \core_favourites\service_factory::get_service_for_user_context($usercontext);
list($favjoin, $favparams) = $ufservice->get_join_sql_by_type('mod_forum', 'discussions',
"favourited", "d.id");
$searchterms = array_values(array_diff($searchterms, array('starredonly:on')));
$params = array_merge($params, $favparams);
$extrasql .= " AND favourited.itemid IS NOT NULL AND favourited.itemid != 0";
}
$selectdiscussion = "(".implode(" OR ", $where).")";
$messagesearch = '';
$searchstring = '';
// Need to concat these back together for parser to work.
foreach($searchterms as $searchterm){
if ($searchstring != '') {
$searchstring .= ' ';
}
$searchstring .= $searchterm;
}
// We need to allow quoted strings for the search. The quotes *should* be stripped
// by the parser, but this should be examined carefully for security implications.
$searchstring = str_replace("\\\"","\"",$searchstring);
$parser = new search_parser();
$lexer = new search_lexer($parser);
if ($lexer->parse($searchstring)) {
$parsearray = $parser->get_parsed_array();
$tagjoins = '';
$tagfields = [];
$tagfieldcount = 0;
if ($parsearray) {
foreach ($parsearray as $token) {
if ($token->getType() == TOKEN_TAGS) {
for ($i = 0; $i <= substr_count($token->getValue(), ','); $i++) {
// Queries can only have a limited number of joins so set a limit sensible users won't exceed.
if ($tagfieldcount > 10) {
continue;
}
$tagjoins .= " LEFT JOIN {tag_instance} ti_$tagfieldcount
ON p.id = ti_$tagfieldcount.itemid
AND ti_$tagfieldcount.component = 'mod_forum'
AND ti_$tagfieldcount.itemtype = 'forum_posts'";
$tagjoins .= " LEFT JOIN {tag} t_$tagfieldcount ON t_$tagfieldcount.id = ti_$tagfieldcount.tagid";
$tagfields[] = "t_$tagfieldcount.rawname";
$tagfieldcount++;
}
}
}
list($messagesearch, $msparams) = search_generate_SQL($parsearray, 'p.message', 'p.subject',
'p.userid', 'u.id', 'u.firstname',
'u.lastname', 'p.modified', 'd.forum',
$tagfields);
$params = ($msparams ? array_merge($params, $msparams) : $params);
}
}
$fromsql = "{forum_posts} p
INNER JOIN {forum_discussions} d ON d.id = p.discussion
INNER JOIN {user} u ON u.id = p.userid $tagjoins $favjoin";
$selectsql = ($messagesearch ? $messagesearch . " AND " : "").
" p.discussion = d.id
AND p.userid = u.id
AND $selectdiscussion
$extrasql";
$countsql = "SELECT COUNT(*)
FROM $fromsql
WHERE $selectsql";
$userfieldsapi = \core_user\fields::for_name();
$allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
$searchsql = "SELECT p.*,
d.forum,
$allnames,
u.email,
u.picture,
u.imagealt
FROM $fromsql
WHERE $selectsql
ORDER BY p.modified DESC";
$totalcount = $DB->count_records_sql($countsql, $params);
return $DB->get_records_sql($searchsql, $params, $limitfrom, $limitnum);
}
/**
* Get all the posts for a user in a forum suitable for forum_print_post
*
* @global object
* @global object
* @uses CONTEXT_MODULE
* @return array
*/
function forum_get_user_posts($forumid, $userid) {
global $CFG, $DB;
$timedsql = "";
$params = array($forumid, $userid);
if (!empty($CFG->forum_enabletimedposts)) {
$cm = get_coursemodule_from_instance('forum', $forumid);
if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
$now = time();
$timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
$params[] = $now;
$params[] = $now;
}
}
$userfieldsapi = \core_user\fields::for_name();
$allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
return $DB->get_records_sql("SELECT p.*, d.forum, $allnames, u.email, u.picture, u.imagealt
FROM {forum} f
JOIN {forum_discussions} d ON d.forum = f.id
JOIN {forum_posts} p ON p.discussion = d.id
JOIN {user} u ON u.id = p.userid
WHERE f.id = ?
AND p.userid = ?
$timedsql
ORDER BY p.modified ASC", $params);
}
/**
* Get all the discussions user participated in
*
* @global object
* @global object
* @uses CONTEXT_MODULE
* @param int $forumid
* @param int $userid
* @return array Array or false
*/
function forum_get_user_involved_discussions($forumid, $userid) {
global $CFG, $DB;
$timedsql = "";
$params = array($forumid, $userid);
if (!empty($CFG->forum_enabletimedposts)) {
$cm = get_coursemodule_from_instance('forum', $forumid);
if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
$now = time();
$timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
$params[] = $now;
$params[] = $now;
}
}
return $DB->get_records_sql("SELECT DISTINCT d.*
FROM {forum} f
JOIN {forum_discussions} d ON d.forum = f.id
JOIN {forum_posts} p ON p.discussion = d.id
WHERE f.id = ?
AND p.userid = ?
$timedsql", $params);
}
/**
* Get all the posts for a user in a forum suitable for forum_print_post
*
* @global object
* @global object
* @param int $forumid
* @param int $userid
* @return stdClass|false collection of counts or false
*/
function forum_count_user_posts($forumid, $userid) {
global $CFG, $DB;
$timedsql = "";
$params = array($forumid, $userid);
if (!empty($CFG->forum_enabletimedposts)) {
$cm = get_coursemodule_from_instance('forum', $forumid);
if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
$now = time();
$timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
$params[] = $now;
$params[] = $now;
}
}
return $DB->get_record_sql("SELECT COUNT(p.id) AS postcount, MAX(p.modified) AS lastpost
FROM {forum} f
JOIN {forum_discussions} d ON d.forum = f.id
JOIN {forum_posts} p ON p.discussion = d.id
JOIN {user} u ON u.id = p.userid
WHERE f.id = ?
AND p.userid = ?
$timedsql", $params);
}
/**
* Given a log entry, return the forum post details for it.
*
* @global object
* @global object
* @param object $log
* @return array|null
*/
function forum_get_post_from_log($log) {
global $CFG, $DB;
$userfieldsapi = \core_user\fields::for_name();
$allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
if ($log->action == "add post") {
return $DB->get_record_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid, $allnames, u.email, u.picture
FROM {forum_discussions} d,
{forum_posts} p,
{forum} f,
{user} u
WHERE p.id = ?
AND d.id = p.discussion
AND p.userid = u.id
AND u.deleted <> '1'
AND f.id = d.forum", array($log->info));
} else if ($log->action == "add discussion") {
return $DB->get_record_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid, $allnames, u.email, u.picture
FROM {forum_discussions} d,
{forum_posts} p,
{forum} f,
{user} u
WHERE d.id = ?
AND d.firstpost = p.id
AND p.userid = u.id
AND u.deleted <> '1'
AND f.id = d.forum", array($log->info));
}
return NULL;
}
/**
* Given a discussion id, return the first post from the discussion
*
* @global object
* @global object
* @param int $dicsussionid
* @return array
*/
function forum_get_firstpost_from_discussion($discussionid) {
global $CFG, $DB;
return $DB->get_record_sql("SELECT p.*
FROM {forum_discussions} d,
{forum_posts} p
WHERE d.id = ?
AND d.firstpost = p.id ", array($discussionid));
}
/**
* Returns an array of counts of replies to each discussion
*
* @param int $forumid
* @param string $forumsort
* @param int $limit
* @param int $page
* @param int $perpage
* @param boolean $canseeprivatereplies Whether the current user can see private replies.
* @return array
*/
function forum_count_discussion_replies($forumid, $forumsort = "", $limit = -1, $page = -1, $perpage = 0,
$canseeprivatereplies = false) {
global $CFG, $DB, $USER;
if ($limit > 0) {
$limitfrom = 0;
$limitnum = $limit;
} else if ($page != -1) {
$limitfrom = $page*$perpage;
$limitnum = $perpage;
} else {
$limitfrom = 0;
$limitnum = 0;
}
if ($forumsort == "") {
$orderby = "";
$groupby = "";
} else {
$orderby = "ORDER BY $forumsort";
$groupby = ", ".strtolower($forumsort);
$groupby = str_replace('desc', '', $groupby);
$groupby = str_replace('asc', '', $groupby);
}
$params = ['forumid' => $forumid];
if (!$canseeprivatereplies) {
$privatewhere = ' AND (p.privatereplyto = :currentuser1 OR p.userid = :currentuser2 OR p.privatereplyto = 0)';
$params['currentuser1'] = $USER->id;
$params['currentuser2'] = $USER->id;
} else {
$privatewhere = '';
}
if (($limitfrom == 0 and $limitnum == 0) or $forumsort == "") {
$sql = "SELECT p.discussion, COUNT(p.id) AS replies, MAX(p.id) AS lastpostid
FROM {forum_posts} p
JOIN {forum_discussions} d ON p.discussion = d.id
WHERE p.parent > 0 AND d.forum = :forumid
$privatewhere
GROUP BY p.discussion";
return $DB->get_records_sql($sql, $params);
} else {
$sql = "SELECT p.discussion, (COUNT(p.id) - 1) AS replies, MAX(p.id) AS lastpostid
FROM {forum_posts} p
JOIN {forum_discussions} d ON p.discussion = d.id
WHERE d.forum = :forumid
$privatewhere
GROUP BY p.discussion $groupby $orderby";
return $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
}
}
/**
* @global object
* @global object
* @global object
* @staticvar array $cache
* @param object $forum
* @param object $cm
* @param object $course
* @return mixed
*/
function forum_count_discussions($forum, $cm, $course) {
global $CFG, $DB, $USER;
static $cache = array();
$now = floor(time() / 60) * 60; // DB Cache Friendly.
$params = array($course->id);
if (!isset($cache[$course->id])) {
if (!empty($CFG->forum_enabletimedposts)) {
$timedsql = "AND d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?)";
$params[] = $now;
$params[] = $now;
} else {
$timedsql = "";
}
$sql = "SELECT f.id, COUNT(d.id) as dcount
FROM {forum} f
JOIN {forum_discussions} d ON d.forum = f.id
WHERE f.course = ?
$timedsql
GROUP BY f.id";
if ($counts = $DB->get_records_sql($sql, $params)) {
foreach ($counts as $count) {
$counts[$count->id] = $count->dcount;
}
$cache[$course->id] = $counts;
} else {
$cache[$course->id] = array();
}
}
if (empty($cache[$course->id][$forum->id])) {
return 0;
}
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode != SEPARATEGROUPS) {
return $cache[$course->id][$forum->id];
}
if (has_capability('moodle/site:accessallgroups', context_module::instance($cm->id))) {
return $cache[$course->id][$forum->id];
}
require_once($CFG->dirroot.'/course/lib.php');
$modinfo = get_fast_modinfo($course);
$mygroups = $modinfo->get_groups($cm->groupingid);
// add all groups posts
$mygroups[-1] = -1;
list($mygroups_sql, $params) = $DB->get_in_or_equal($mygroups);
$params[] = $forum->id;
if (!empty($CFG->forum_enabletimedposts)) {
$timedsql = "AND d.timestart < $now AND (d.timeend = 0 OR d.timeend > $now)";
$params[] = $now;
$params[] = $now;
} else {
$timedsql = "";
}
$sql = "SELECT COUNT(d.id)
FROM {forum_discussions} d
WHERE d.groupid $mygroups_sql AND d.forum = ?
$timedsql";
return $DB->get_field_sql($sql, $params);
}
/**
* Get all discussions in a forum
*
* @global object
* @global object
* @global object
* @uses CONTEXT_MODULE
* @uses VISIBLEGROUPS
* @param object $cm
* @param string $forumsort
* @param bool $fullpost
* @param int $unused
* @param int $limit
* @param bool $userlastmodified
* @param int $page
* @param int $perpage
* @param int $groupid if groups enabled, get discussions for this group overriding the current group.
* Use FORUM_POSTS_ALL_USER_GROUPS for all the user groups
* @param int $updatedsince retrieve only discussions updated since the given time
* @return array
*/
function forum_get_discussions($cm, $forumsort="", $fullpost=true, $unused=-1, $limit=-1,
$userlastmodified=false, $page=-1, $perpage=0, $groupid = -1,
$updatedsince = 0) {
global $CFG, $DB, $USER;
$timelimit = '';
$now = floor(time() / 60) * 60;
$params = array($cm->instance);
$modcontext = context_module::instance($cm->id);
if (!has_capability('mod/forum:viewdiscussion', $modcontext)) { /// User must have perms to view discussions
return array();
}
if (!empty($CFG->forum_enabletimedposts)) { /// Users must fulfill timed posts
if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
$timelimit = " AND ((d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?))";
$params[] = $now;
$params[] = $now;
if (isloggedin()) {
$timelimit .= " OR d.userid = ?";
$params[] = $USER->id;
}
$timelimit .= ")";
}
}
if ($limit > 0) {
$limitfrom = 0;
$limitnum = $limit;
} else if ($page != -1) {
$limitfrom = $page*$perpage;
$limitnum = $perpage;
} else {
$limitfrom = 0;
$limitnum = 0;
}
$groupmode = groups_get_activity_groupmode($cm);
if ($groupmode) {
if (empty($modcontext)) {
$modcontext = context_module::instance($cm->id);
}
// Special case, we received a groupid to override currentgroup.
if ($groupid > 0) {
$course = get_course($cm->course);
if (!groups_group_visible($groupid, $course, $cm)) {
// User doesn't belong to this group, return nothing.
return array();
}
$currentgroup = $groupid;
} else if ($groupid === -1) {
$currentgroup = groups_get_activity_group($cm);
} else {
// Get discussions for all groups current user can see.
$currentgroup = null;
}
if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
if ($currentgroup) {
$groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
$params[] = $currentgroup;
} else {
$groupselect = "";
}
} else {
// Separate groups.
// Get discussions for all groups current user can see.
if ($currentgroup === null) {
$mygroups = array_keys(groups_get_all_groups($cm->course, $USER->id, $cm->groupingid, 'g.id'));
if (empty($mygroups)) {
$groupselect = "AND d.groupid = -1";
} else {
list($insqlgroups, $inparamsgroups) = $DB->get_in_or_equal($mygroups);
$groupselect = "AND (d.groupid = -1 OR d.groupid $insqlgroups)";
$params = array_merge($params, $inparamsgroups);
}
} else if ($currentgroup) {
$groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
$params[] = $currentgroup;
} else {
$groupselect = "AND d.groupid = -1";
}
}
} else {
$groupselect = "";
}
if (empty($forumsort)) {
$forumsort = forum_get_default_sort_order();
}
if (empty($fullpost)) {
$postdata = "p.id, p.subject, p.modified, p.discussion, p.userid, p.created";
} else {
$postdata = "p.*";
}
$userfieldsapi = \core_user\fields::for_name();
if (empty($userlastmodified)) { // We don't need to know this
$umfields = "";
$umtable = "";
} else {
$umfields = $userfieldsapi->get_sql('um', false, 'um')->selects . ', um.email AS umemail, um.picture AS umpicture,
um.imagealt AS umimagealt';
$umtable = " LEFT JOIN {user} um ON (d.usermodified = um.id)";
}
$updatedsincesql = '';
if (!empty($updatedsince)) {
$updatedsincesql = 'AND d.timemodified > ?';
$params[] = $updatedsince;
}
$discussionfields = "d.id as discussionid, d.course, d.forum, d.name, d.firstpost, d.groupid, d.assessed," .
" d.timemodified, d.usermodified, d.timestart, d.timeend, d.pinned, d.timelocked";
$allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
$sql = "SELECT $postdata, $discussionfields,
$allnames, u.email, u.picture, u.imagealt, u.deleted AS userdeleted $umfields
FROM {forum_discussions} d
JOIN {forum_posts} p ON p.discussion = d.id
JOIN {user} u ON p.userid = u.id
$umtable
WHERE d.forum = ? AND p.parent = 0
$timelimit $groupselect $updatedsincesql
ORDER BY $forumsort, d.id DESC";
return $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
}
/**
* Gets the neighbours (previous and next) of a discussion.
*
* The calculation is based on the timemodified when time modified or time created is identical
* It will revert to using the ID to sort consistently. This is better tha skipping a discussion.
*
* For blog-style forums, the calculation is based on the original creation time of the
* blog post.
*
* Please note that this does not check whether or not the discussion passed is accessible
* by the user, it simply uses it as a reference to find the neighbours. On the other hand,
* the returned neighbours are checked and are accessible to the current user.
*
* @param object $cm The CM record.
* @param object $discussion The discussion record.
* @param object $forum The forum instance record.
* @return array That always contains the keys 'prev' and 'next'. When there is a result
* they contain the record with minimal information such as 'id' and 'name'.
* When the neighbour is not found the value is false.
*/
function forum_get_discussion_neighbours($cm, $discussion, $forum) {
global $CFG, $DB, $USER;
if ($cm->instance != $discussion->forum or $discussion->forum != $forum->id or $forum->id != $cm->instance) {
throw new coding_exception('Discussion is not part of the same forum.');
}
$neighbours = array('prev' => false, 'next' => false);
$now = floor(time() / 60) * 60;
$params = array();
$modcontext = context_module::instance($cm->id);
$groupmode = groups_get_activity_groupmode($cm);
$currentgroup = groups_get_activity_group($cm);
// Users must fulfill timed posts.
$timelimit = '';
if (!empty($CFG->forum_enabletimedposts)) {
if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
$timelimit = ' AND ((d.timestart <= :tltimestart AND (d.timeend = 0 OR d.timeend > :tltimeend))';
$params['tltimestart'] = $now;
$params['tltimeend'] = $now;
if (isloggedin()) {
$timelimit .= ' OR d.userid = :tluserid';
$params['tluserid'] = $USER->id;
}
$timelimit .= ')';
}
}
// Limiting to posts accessible according to groups.
$groupselect = '';
if ($groupmode) {
if ($groupmode == VISIBLEGROUPS || has_capability('moodle/site:accessallgroups', $modcontext)) {
if ($currentgroup) {
$groupselect = 'AND (d.groupid = :groupid OR d.groupid = -1)';
$params['groupid'] = $currentgroup;
}
} else {
if ($currentgroup) {
$groupselect = 'AND (d.groupid = :groupid OR d.groupid = -1)';
$params['groupid'] = $currentgroup;
} else {
$groupselect = 'AND d.groupid = -1';
}
}
}
$params['forumid'] = $cm->instance;
$params['discid1'] = $discussion->id;
$params['discid2'] = $discussion->id;
$params['discid3'] = $discussion->id;
$params['discid4'] = $discussion->id;
$params['disctimecompare1'] = $discussion->timemodified;
$params['disctimecompare2'] = $discussion->timemodified;
$params['pinnedstate1'] = (int) $discussion->pinned;
$params['pinnedstate2'] = (int) $discussion->pinned;
$params['pinnedstate3'] = (int) $discussion->pinned;
$params['pinnedstate4'] = (int) $discussion->pinned;
$sql = "SELECT d.id, d.name, d.timemodified, d.groupid, d.timestart, d.timeend
FROM {forum_discussions} d
JOIN {forum_posts} p ON d.firstpost = p.id
WHERE d.forum = :forumid
AND d.id <> :discid1
$timelimit
$groupselect";
$comparefield = "d.timemodified";
$comparevalue = ":disctimecompare1";
$comparevalue2 = ":disctimecompare2";
if (!empty($CFG->forum_enabletimedposts)) {
// Here we need to take into account the release time (timestart)
// if one is set, of the neighbouring posts and compare it to the
// timestart or timemodified of *this* post depending on if the
// release date of this post is in the future or not.
// This stops discussions that appear later because of the
// timestart value from being buried under discussions that were
// made afterwards.
$comparefield = "CASE WHEN d.timemodified < d.timestart
THEN d.timestart ELSE d.timemodified END";
if ($discussion->timemodified < $discussion->timestart) {
// Normally we would just use the timemodified for sorting
// discussion posts. However, when timed discussions are enabled,
// then posts need to be sorted base on the later of timemodified
// or the release date of the post (timestart).
$params['disctimecompare1'] = $discussion->timestart;
$params['disctimecompare2'] = $discussion->timestart;
}
}
$orderbydesc = forum_get_default_sort_order(true, $comparefield, 'd', false);
$orderbyasc = forum_get_default_sort_order(false, $comparefield, 'd', false);
if ($forum->type === 'blog') {
$subselect = "SELECT pp.created
FROM {forum_discussions} dd
JOIN {forum_posts} pp ON dd.firstpost = pp.id ";
$subselectwhere1 = " WHERE dd.id = :discid3";
$subselectwhere2 = " WHERE dd.id = :discid4";
$comparefield = "p.created";
$sub1 = $subselect.$subselectwhere1;
$comparevalue = "($sub1)";
$sub2 = $subselect.$subselectwhere2;
$comparevalue2 = "($sub2)";
$orderbydesc = "d.pinned, p.created DESC";
$orderbyasc = "d.pinned, p.created ASC";
}
$prevsql = $sql . " AND ( (($comparefield < $comparevalue) AND :pinnedstate1 = d.pinned)
OR ($comparefield = $comparevalue2 AND (d.pinned = 0 OR d.pinned = :pinnedstate4) AND d.id < :discid2)
OR (d.pinned = 0 AND d.pinned <> :pinnedstate2))
ORDER BY CASE WHEN d.pinned = :pinnedstate3 THEN 1 ELSE 0 END DESC, $orderbydesc, d.id DESC";
$nextsql = $sql . " AND ( (($comparefield > $comparevalue) AND :pinnedstate1 = d.pinned)
OR ($comparefield = $comparevalue2 AND (d.pinned = 1 OR d.pinned = :pinnedstate4) AND d.id > :discid2)
OR (d.pinned = 1 AND d.pinned <> :pinnedstate2))
ORDER BY CASE WHEN d.pinned = :pinnedstate3 THEN 1 ELSE 0 END DESC, $orderbyasc, d.id ASC";
$neighbours['prev'] = $DB->get_record_sql($prevsql, $params, IGNORE_MULTIPLE);
$neighbours['next'] = $DB->get_record_sql($nextsql, $params, IGNORE_MULTIPLE);
return $neighbours;
}
/**
* Get the sql to use in the ORDER BY clause for forum discussions.
*
* This has the ordering take timed discussion windows into account.
*
* @param bool $desc True for DESC, False for ASC.
* @param string $compare The field in the SQL to compare to normally sort by.
* @param string $prefix The prefix being used for the discussion table.
* @param bool $pinned sort pinned posts to the top
* @return string
*/
function forum_get_default_sort_order($desc = true, $compare = 'd.timemodified', $prefix = 'd', $pinned = true) {
global $CFG;
if (!empty($prefix)) {
$prefix .= '.';
}
$dir = $desc ? 'DESC' : 'ASC';
if ($pinned == true) {
$pinned = "{$prefix}pinned DESC,";
} else {
$pinned = '';
}
$sort = "{$prefix}timemodified";
if (!empty($CFG->forum_enabletimedposts)) {
$sort = "CASE WHEN {$compare} < {$prefix}timestart
THEN {$prefix}timestart
ELSE {$compare}
END";
}
return "$pinned $sort $dir";
}
/**
*
* @global object
* @global object
* @global object
* @uses CONTEXT_MODULE
* @uses VISIBLEGROUPS
* @param object $cm
* @return array
*/
function forum_get_discussions_unread($cm) {
global $CFG, $DB, $USER;
$now = floor(time() / 60) * 60;
$cutoffdate = $now - ($CFG->forum_oldpostdays*24*60*60);
$params = array();
$groupmode = groups_get_activity_groupmode($cm);
$currentgroup = groups_get_activity_group($cm);
if ($groupmode) {
$modcontext = context_module::instance($cm->id);
if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
if ($currentgroup) {
$groupselect = "AND (d.groupid = :currentgroup OR d.groupid = -1)";
$params['currentgroup'] = $currentgroup;
} else {
$groupselect = "";
}
} else {
//separate groups without access all
if ($currentgroup) {
$groupselect = "AND (d.groupid = :currentgroup OR d.groupid = -1)";
$params['currentgroup'] = $currentgroup;
} else {
$groupselect = "AND d.groupid = -1";
}
}
} else {
$groupselect = "";
}
if (!empty($CFG->forum_enabletimedposts)) {
$timedsql = "AND d.timestart < :now1 AND (d.timeend = 0 OR d.timeend > :now2)";
$params['now1'] = $now;
$params['now2'] = $now;
} else {
$timedsql = "";
}
$sql = "SELECT d.id, COUNT(p.id) AS unread
FROM {forum_discussions} d
JOIN {forum_posts} p ON p.discussion = d.id
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = $USER->id)
WHERE d.forum = {$cm->instance}
AND p.modified >= :cutoffdate AND r.id is NULL
$groupselect
$timedsql
GROUP BY d.id";
$params['cutoffdate'] = $cutoffdate;
if ($unreads = $DB->get_records_sql($sql, $params)) {
foreach ($unreads as $unread) {
$unreads[$unread->id] = $unread->unread;
}
return $unreads;
} else {
return array();
}
}
/**
* @global object
* @global object
* @global object
* @uses CONEXT_MODULE
* @uses VISIBLEGROUPS
* @param object $cm
* @return array
*/
function forum_get_discussions_count($cm) {
global $CFG, $DB, $USER;
$now = floor(time() / 60) * 60;
$params = array($cm->instance);
$groupmode = groups_get_activity_groupmode($cm);
$currentgroup = groups_get_activity_group($cm);
if ($groupmode) {
$modcontext = context_module::instance($cm->id);
if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
if ($currentgroup) {
$groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
$params[] = $currentgroup;
} else {
$groupselect = "";
}
} else {
//seprate groups without access all
if ($currentgroup) {
$groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
$params[] = $currentgroup;
} else {
$groupselect = "AND d.groupid = -1";
}
}
} else {
$groupselect = "";
}
$timelimit = "";
if (!empty($CFG->forum_enabletimedposts)) {
$modcontext = context_module::instance($cm->id);
if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
$timelimit = " AND ((d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?))";
$params[] = $now;
$params[] = $now;
if (isloggedin()) {
$timelimit .= " OR d.userid = ?";
$params[] = $USER->id;
}
$timelimit .= ")";
}
}
$sql = "SELECT COUNT(d.id)
FROM {forum_discussions} d
JOIN {forum_posts} p ON p.discussion = d.id
WHERE d.forum = ? AND p.parent = 0
$groupselect $timelimit";
return $DB->get_field_sql($sql, $params);
}
// OTHER FUNCTIONS ///////////////////////////////////////////////////////////
/**
* @global object
* @global object
* @param int $courseid
* @param string $type
*/
function forum_get_course_forum($courseid, $type) {
// How to set up special 1-per-course forums
global $CFG, $DB, $OUTPUT, $USER;
if ($forums = $DB->get_records_select("forum", "course = ? AND type = ?", array($courseid, $type), "id ASC")) {
// There should always only be ONE, but with the right combination of
// errors there might be more. In this case, just return the oldest one (lowest ID).
foreach ($forums as $forum) {
return $forum; // ie the first one
}
}
// Doesn't exist, so create one now.
$forum = new stdClass();
$forum->course = $courseid;
$forum->type = "$type";
if (!empty($USER->htmleditor)) {
$forum->introformat = $USER->htmleditor;
}
switch ($forum->type) {
case "news":
$forum->name = get_string("namenews", "forum");
$forum->intro = get_string("intronews", "forum");
$forum->introformat = FORMAT_HTML;
$forum->forcesubscribe = FORUM_FORCESUBSCRIBE;
$forum->assessed = 0;
if ($courseid == SITEID) {
$forum->name = get_string("sitenews");
$forum->forcesubscribe = 0;
}
break;
case "social":
$forum->name = get_string("namesocial", "forum");
$forum->intro = get_string("introsocial", "forum");
$forum->introformat = FORMAT_HTML;
$forum->assessed = 0;
$forum->forcesubscribe = 0;
break;
case "blog":
$forum->name = get_string('blogforum', 'forum');
$forum->intro = get_string('introblog', 'forum');
$forum->introformat = FORMAT_HTML;
$forum->assessed = 0;
$forum->forcesubscribe = 0;
break;
default:
echo $OUTPUT->notification("That forum type doesn't exist!");
return false;
break;
}
$forum->timemodified = time();
$forum->id = $DB->insert_record("forum", $forum);
if (! $module = $DB->get_record("modules", array("name" => "forum"))) {
echo $OUTPUT->notification("Could not find forum module!!");
return false;
}
$mod = new stdClass();
$mod->course = $courseid;
$mod->module = $module->id;
$mod->instance = $forum->id;
$mod->section = 0;
include_once("$CFG->dirroot/course/lib.php");
if (! $mod->coursemodule = add_course_module($mod) ) {
echo $OUTPUT->notification("Could not add a new course module to the course '" . $courseid . "'");
return false;
}
$sectionid = course_add_cm_to_section($courseid, $mod->coursemodule, 0);
return $DB->get_record("forum", array("id" => "$forum->id"));
}
/**
* Return rating related permissions
*
* @param string $options the context id
* @return array an associative array of the user's rating permissions
*/
function forum_rating_permissions($contextid, $component, $ratingarea) {
$context = context::instance_by_id($contextid, MUST_EXIST);
if ($component != 'mod_forum' || $ratingarea != 'post') {
// We don't know about this component/ratingarea so just return null to get the
// default restrictive permissions.
return null;
}
return array(
'view' => has_capability('mod/forum:viewrating', $context),
'viewany' => has_capability('mod/forum:viewanyrating', $context),
'viewall' => has_capability('mod/forum:viewallratings', $context),
'rate' => has_capability('mod/forum:rate', $context)
);
}
/**
* Validates a submitted rating
* @param array $params submitted data
* context => object the context in which the rated items exists [required]
* component => The component for this module - should always be mod_forum [required]
* ratingarea => object the context in which the rated items exists [required]
*
* itemid => int the ID of the object being rated [required]
* scaleid => int the scale from which the user can select a rating. Used for bounds checking. [required]
* rating => int the submitted rating [required]
* rateduserid => int the id of the user whose items have been rated. NOT the user who submitted the ratings. 0 to update all. [required]
* aggregation => int the aggregation method to apply when calculating grades ie RATING_AGGREGATE_AVERAGE [required]
* @return boolean true if the rating is valid. Will throw rating_exception if not
*/
function forum_rating_validate($params) {
global $DB, $USER;
// Check the component is mod_forum
if ($params['component'] != 'mod_forum') {
throw new rating_exception('invalidcomponent');
}
// Check the ratingarea is post (the only rating area in forum)
if ($params['ratingarea'] != 'post') {
throw new rating_exception('invalidratingarea');
}
// Check the rateduserid is not the current user .. you can't rate your own posts
if ($params['rateduserid'] == $USER->id) {
throw new rating_exception('nopermissiontorate');
}
// Fetch all the related records ... we need to do this anyway to call forum_user_can_see_post
$post = $DB->get_record('forum_posts', array('id' => $params['itemid'], 'userid' => $params['rateduserid']), '*', MUST_EXIST);
$discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion), '*', MUST_EXIST);
$forum = $DB->get_record('forum', array('id' => $discussion->forum), '*', MUST_EXIST);
$course = $DB->get_record('course', array('id' => $forum->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id , false, MUST_EXIST);
$context = context_module::instance($cm->id);
// Make sure the context provided is the context of the forum
if ($context->id != $params['context']->id) {
throw new rating_exception('invalidcontext');
}
if ($forum->scale != $params['scaleid']) {
//the scale being submitted doesnt match the one in the database
throw new rating_exception('invalidscaleid');
}
// check the item we're rating was created in the assessable time window
if (!empty($forum->assesstimestart) && !empty($forum->assesstimefinish)) {
if ($post->created < $forum->assesstimestart || $post->created > $forum->assesstimefinish) {
throw new rating_exception('notavailable');
}
}
//check that the submitted rating is valid for the scale
// lower limit
if ($params['rating'] < 0 && $params['rating'] != RATING_UNSET_RATING) {
throw new rating_exception('invalidnum');
}
// upper limit
if ($forum->scale < 0) {
//its a custom scale
$scalerecord = $DB->get_record('scale', array('id' => -$forum->scale));
if ($scalerecord) {
$scalearray = explode(',', $scalerecord->scale);
if ($params['rating'] > count($scalearray)) {
throw new rating_exception('invalidnum');
}
} else {
throw new rating_exception('invalidscaleid');
}
} else if ($params['rating'] > $forum->scale) {
//if its numeric and submitted rating is above maximum
throw new rating_exception('invalidnum');
}
// Make sure groups allow this user to see the item they're rating
if ($discussion->groupid > 0 and $groupmode = groups_get_activity_groupmode($cm, $course)) { // Groups are being used
if (!groups_group_exists($discussion->groupid)) { // Can't find group
throw new rating_exception('cannotfindgroup');//something is wrong
}
if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $context)) {
// do not allow rating of posts from other groups when in SEPARATEGROUPS or VISIBLEGROUPS
throw new rating_exception('notmemberofgroup');
}
}
// perform some final capability checks
if (!forum_user_can_see_post($forum, $discussion, $post, $USER, $cm)) {
throw new rating_exception('nopermissiontorate');
}
return true;
}
/**
* Can the current user see ratings for a given itemid?
*
* @param array $params submitted data
* contextid => int contextid [required]
* component => The component for this module - should always be mod_forum [required]
* ratingarea => object the context in which the rated items exists [required]
* itemid => int the ID of the object being rated [required]
* scaleid => int scale id [optional]
* @return bool
* @throws coding_exception
* @throws rating_exception
*/
function mod_forum_rating_can_see_item_ratings($params) {
global $DB, $USER;
// Check the component is mod_forum.
if (!isset($params['component']) || $params['component'] != 'mod_forum') {
throw new rating_exception('invalidcomponent');
}
// Check the ratingarea is post (the only rating area in forum).
if (!isset($params['ratingarea']) || $params['ratingarea'] != 'post') {
throw new rating_exception('invalidratingarea');
}
if (!isset($params['itemid'])) {
throw new rating_exception('invaliditemid');
}
$post = $DB->get_record('forum_posts', array('id' => $params['itemid']), '*', MUST_EXIST);
$discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion), '*', MUST_EXIST);
$forum = $DB->get_record('forum', array('id' => $discussion->forum), '*', MUST_EXIST);
$course = $DB->get_record('course', array('id' => $forum->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id , false, MUST_EXIST);
// Perform some final capability checks.
if (!forum_user_can_see_post($forum, $discussion, $post, $USER, $cm)) {
return false;
}
return true;
}
/**
< * This function prints the overview of a discussion in the forum listing.
< * It needs some discussion information and some post information, these
< * happen to be combined for efficiency in the $post parameter by the function
< * that calls this one: forum_print_latest_discussions()
< *
< * @global object
< * @global object
< * @param object $post The post object (passed by reference for speed).
< * @param object $forum The forum object.
< * @param int $group Current group.
< * @param string $datestring Format to use for the dates.
< * @param boolean $cantrack Is tracking enabled for this forum.
< * @param boolean $forumtracked Is the user tracking this forum.
< * @param boolean $canviewparticipants True if user has the viewparticipants permission for this course
< * @param boolean $canviewhiddentimedposts True if user has the viewhiddentimedposts permission for this forum
< */
< function forum_print_discussion_header(&$post, $forum, $group = -1, $datestring = "",
< $cantrack = true, $forumtracked = true, $canviewparticipants = true, $modcontext = null,
< $canviewhiddentimedposts = false) {
<
< global $COURSE, $USER, $CFG, $OUTPUT, $PAGE;
<
< static $rowcount;
< static $strmarkalldread;
<
< if (empty($modcontext)) {
< if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
< throw new \moodle_exception('invalidcoursemodule');
< }
< $modcontext = context_module::instance($cm->id);
< }
<
< if (!isset($rowcount)) {
< $rowcount = 0;
< $strmarkalldread = get_string('markalldread', 'forum');
< } else {
< $rowcount = ($rowcount + 1) % 2;
< }
<
< $post->subject = format_string($post->subject,true);
<
< $canviewfullnames = has_capability('moodle/site:viewfullnames', $modcontext);
< $timeddiscussion = !empty($CFG->forum_enabletimedposts) && ($post->timestart || $post->timeend);
< $timedoutsidewindow = '';
< if ($timeddiscussion && ($post->timestart > time() || ($post->timeend != 0 && $post->timeend < time()))) {
< $timedoutsidewindow = ' dimmed_text';
< }
<
< echo "\n\n";
< echo '<tr class="discussion r'.$rowcount.$timedoutsidewindow.'">';
<
< $topicclass = 'topic starter';
< if (FORUM_DISCUSSION_PINNED == $post->pinned) {
< $topicclass .= ' pinned';
< }
< echo '<td class="'.$topicclass.'">';
< if (FORUM_DISCUSSION_PINNED == $post->pinned) {
< echo $OUTPUT->pix_icon('i/pinned', get_string('discussionpinned', 'forum'), 'mod_forum');
< }
< $canalwaysseetimedpost = $USER->id == $post->userid || $canviewhiddentimedposts;
< if ($timeddiscussion && $canalwaysseetimedpost) {
< echo $PAGE->get_renderer('mod_forum')->timed_discussion_tooltip($post, empty($timedoutsidewindow));
< }
<
< echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'">'.$post->subject.'</a>';
< echo "</td>\n";
<
< // Picture
< $postuser = new stdClass();
< $postuserfields = explode(',', implode(',', \core_user\fields::get_picture_fields()));
< $postuser = username_load_fields_from_object($postuser, $post, null, $postuserfields);
< $postuser->id = $post->userid;
< echo '<td class="author">';
< echo '<div class="media">';
< echo '<span class="float-left">';
< echo $OUTPUT->user_picture($postuser, array('courseid'=>$forum->course));
< echo '</span>';
< // User name
< echo '<div class="media-body">';
< $fullname = fullname($postuser, $canviewfullnames);
< echo '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$post->userid.'&course='.$forum->course.'">'.$fullname.'</a>';
< echo '</div>';
< echo '</div>';
< echo "</td>\n";
<
< // Group picture
< if ($group !== -1) { // Groups are active - group is a group data object or NULL
< echo '<td class="picture group">';
< if (!empty($group->picture)) {
< if ($canviewparticipants && $COURSE->groupmode) {
< $picturelink = true;
< } else {
< $picturelink = false;
< }
< print_group_picture($group, $forum->course, false, false, $picturelink);
< } else if (isset($group->id)) {
< if ($canviewparticipants && $COURSE->groupmode) {
< echo '<a href="'.$CFG->wwwroot.'/user/index.php?id='.$forum->course.'&group='.$group->id.'">'.$group->name.'</a>';
< } else {
< echo $group->name;
< }
< }
< echo "</td>\n";
< }
<
< if (has_capability('mod/forum:viewdiscussion', $modcontext)) { // Show the column with replies
< echo '<td class="replies">';
< echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'">';
< echo $post->replies.'</a>';
< echo "</td>\n";
<
< if ($cantrack) {
< echo '<td class="replies">';
< if ($forumtracked) {
< if ($post->unread > 0) {
< echo '<span class="unread">';
< echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'#unread">';
< echo $post->unread;
< echo '</a>';
< echo '<a title="'.$strmarkalldread.'" href="'.$CFG->wwwroot.'/mod/forum/markposts.php?f='.
< $forum->id.'&d='.$post->discussion.'&mark=read&return=/mod/forum/view.php&sesskey=' .
< sesskey() . '">' . $OUTPUT->pix_icon('t/markasread', $strmarkalldread) . '</a>';
< echo '</span>';
< } else {
< echo '<span class="read">';
< echo $post->unread;
< echo '</span>';
< }
< } else {
< echo '<span class="read">';
< echo '-';
< echo '</span>';
< }
< echo "</td>\n";
< }
< }
<
< echo '<td class="lastpost">';
< $usedate = (empty($post->timemodified)) ? $post->created : $post->timemodified;
< $parenturl = '';
< $usermodified = new stdClass();
< $usermodified->id = $post->usermodified;
< $usermodified = username_load_fields_from_object($usermodified, $post, 'um');
<
< // In QA forums we check that the user can view participants.
< if ($forum->type !== 'qanda' || $canviewparticipants) {
< echo '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$post->usermodified.'&course='.$forum->course.'">'.
< fullname($usermodified, $canviewfullnames).'</a><br />';
< $parenturl = (empty($post->lastpostid)) ? '' : '&parent='.$post->lastpostid;
< }
<
< echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.$parenturl.'">'.
< userdate_htmltime($usedate, $datestring).'</a>';
< echo "</td>\n";
<
< // is_guest should be used here as this also checks whether the user is a guest in the current course.
< // Guests and visitors cannot subscribe - only enrolled users.
< if ((!is_guest($modcontext, $USER) && isloggedin()) && has_capability('mod/forum:viewdiscussion', $modcontext)) {
< // Discussion subscription.
< if (\mod_forum\subscriptions::is_subscribable($forum)) {
< echo '<td class="discussionsubscription">';
< echo forum_get_discussion_subscription_icon($forum, $post->discussion);
< echo '</td>';
< }
< }
<
< echo "</tr>\n\n";
<
< }
<
< /**
* Return the markup for the discussion subscription toggling icon.
*
* @param stdClass $forum The forum object.
* @param int $discussionid The discussion to create an icon for.
* @return string The generated markup.
*/
function forum_get_discussion_subscription_icon($forum, $discussionid, $returnurl = null, $includetext = false) {
global $USER, $OUTPUT, $PAGE;
if ($returnurl === null && $PAGE->url) {
$returnurl = $PAGE->url->out();
}
$o = '';
$subscriptionstatus = \mod_forum\subscriptions::is_subscribed($USER->id, $forum, $discussionid);
$subscriptionlink = new moodle_url('/mod/forum/subscribe.php', array(
'sesskey' => sesskey(),
'id' => $forum->id,
'd' => $discussionid,
'returnurl' => $returnurl,
));
if ($includetext) {
$o .= $subscriptionstatus ? get_string('subscribed', 'mod_forum') : get_string('notsubscribed', 'mod_forum');
}
if ($subscriptionstatus) {
$output = $OUTPUT->pix_icon('t/subscribed', get_string('clicktounsubscribe', 'forum'), 'mod_forum');
if ($includetext) {
$output .= get_string('subscribed', 'mod_forum');
}
return html_writer::link($subscriptionlink, $output, array(
'title' => get_string('clicktounsubscribe', 'forum'),
'class' => 'discussiontoggle btn btn-link',
'data-forumid' => $forum->id,
'data-discussionid' => $discussionid,
'data-includetext' => $includetext,
));
} else {
$output = $OUTPUT->pix_icon('t/unsubscribed', get_string('clicktosubscribe', 'forum'), 'mod_forum');
if ($includetext) {
$output .= get_string('notsubscribed', 'mod_forum');
}
return html_writer::link($subscriptionlink, $output, array(
'title' => get_string('clicktosubscribe', 'forum'),
'class' => 'discussiontoggle btn btn-link',
'data-forumid' => $forum->id,
'data-discussionid' => $discussionid,
'data-includetext' => $includetext,
));
}
}
/**
* Return a pair of spans containing classes to allow the subscribe and
* unsubscribe icons to be pre-loaded by a browser.
*
* @return string The generated markup
*/
function forum_get_discussion_subscription_icon_preloaders() {
$o = '';
$o .= html_writer::span(' ', 'preload-subscribe');
$o .= html_writer::span(' ', 'preload-unsubscribe');
return $o;
}
/**
* Print the drop down that allows the user to select how they want to have
* the discussion displayed.
*
* @param int $id forum id if $forumtype is 'single',
* discussion id for any other forum type
* @param mixed $mode forum layout mode
* @param string $forumtype optional
*/
function forum_print_mode_form($id, $mode, $forumtype='') {
global $OUTPUT;
$useexperimentalui = get_user_preferences('forum_useexperimentalui', false);
if ($forumtype == 'single') {
$select = new single_select(
new moodle_url("/mod/forum/view.php",
array('f' => $id)),
'mode',
forum_get_layout_modes($useexperimentalui),
$mode,
null,
"mode"
);
$select->set_label(get_string('displaymode', 'forum'), array('class' => 'accesshide'));
$select->class = "forummode";
} else {
$select = new single_select(
new moodle_url("/mod/forum/discuss.php",
array('d' => $id)),
'mode',
forum_get_layout_modes($useexperimentalui),
$mode,
null,
"mode"
);
$select->set_label(get_string('displaymode', 'forum'), array('class' => 'accesshide'));
}
echo $OUTPUT->render($select);
}
/**
* @global object
* @param object $course
* @param string $search
* @return string
*/
function forum_search_form($course, $search='') {
global $CFG, $PAGE;
$forumsearch = new \mod_forum\output\quick_search_form($course->id, $search);
$output = $PAGE->get_renderer('mod_forum');
return $output->render($forumsearch);
}
/**
* Retrieve HTML for the page action
*
* @param forum_entity|null $forum The forum entity.
* @param mixed $groupid false if groups not used, int if groups used, 0 means all groups
* @param stdClass $course The course object.
* @param string $search The search string.
* @return string rendered HTML string.
*/
function forum_activity_actionbar(?forum_entity $forum, $groupid, stdClass $course, string $search=''): string {
global $PAGE;
$actionbar = new mod_forum\output\forum_actionbar($forum, $course, $groupid, $search);
$output = $PAGE->get_renderer('mod_forum');
return $output->render($actionbar);
}
/**
* @global object
* @global object
*/
function forum_set_return() {
global $CFG, $SESSION;
if (! isset($SESSION->fromdiscussion)) {
$referer = get_local_referer(false);
// If the referer is NOT a login screen then save it.
if (! strncasecmp("$CFG->wwwroot/login", $referer, 300)) {
$SESSION->fromdiscussion = $referer;
}
}
}
/**
* @global object
* @param string|\moodle_url $default
* @return string
*/
function forum_go_back_to($default) {
global $SESSION;
if (!empty($SESSION->fromdiscussion)) {
$returnto = $SESSION->fromdiscussion;
unset($SESSION->fromdiscussion);
return $returnto;
} else {
return $default;
}
}
/**
* Given a discussion object that is being moved to $forumto,
* this function checks all posts in that discussion
* for attachments, and if any are found, these are
* moved to the new forum directory.
*
* @global object
* @param object $discussion
* @param int $forumfrom source forum id
* @param int $forumto target forum id
* @return bool success
*/
function forum_move_attachments($discussion, $forumfrom, $forumto) {
global $DB;
$fs = get_file_storage();
$newcm = get_coursemodule_from_instance('forum', $forumto);
$oldcm = get_coursemodule_from_instance('forum', $forumfrom);
$newcontext = context_module::instance($newcm->id);
$oldcontext = context_module::instance($oldcm->id);
// loop through all posts, better not use attachment flag ;-)
if ($posts = $DB->get_records('forum_posts', array('discussion'=>$discussion->id), '', 'id, attachment')) {
foreach ($posts as $post) {
$fs->move_area_files_to_new_context($oldcontext->id,
$newcontext->id, 'mod_forum', 'post', $post->id);
$attachmentsmoved = $fs->move_area_files_to_new_context($oldcontext->id,
$newcontext->id, 'mod_forum', 'attachment', $post->id);
if ($attachmentsmoved > 0 && $post->attachment != '1') {
// Weird - let's fix it
$post->attachment = '1';
$DB->update_record('forum_posts', $post);
} else if ($attachmentsmoved == 0 && $post->attachment != '') {
// Weird - let's fix it
$post->attachment = '';
$DB->update_record('forum_posts', $post);
}
}
}
return true;
}
/**
* Returns attachments as formated text/html optionally with separate images
*
* @global object
* @global object
* @global object
* @param object $post
* @param object $cm
* @param string $type html/text/separateimages
* @return mixed string or array of (html text withouth images and image HTML)
*/
function forum_print_attachments($post, $cm, $type) {
global $CFG, $DB, $USER, $OUTPUT;
if (empty($post->attachment)) {
return $type !== 'separateimages' ? '' : array('', '');
}
if (!in_array($type, array('separateimages', 'html', 'text'))) {
return $type !== 'separateimages' ? '' : array('', '');
}
if (!$context = context_module::instance($cm->id)) {
return $type !== 'separateimages' ? '' : array('', '');
}
$strattachment = get_string('attachment', 'forum');
$fs = get_file_storage();
$imagereturn = '';
$output = '';
$canexport = !empty($CFG->enableportfolios) && (has_capability('mod/forum:exportpost', $context) || ($post->userid == $USER->id && has_capability('mod/forum:exportownpost', $context)));
if ($canexport) {
require_once($CFG->libdir.'/portfoliolib.php');
}
// We retrieve all files according to the time that they were created. In the case that several files were uploaded
// at the sametime (e.g. in the case of drag/drop upload) we revert to using the filename.
$files = $fs->get_area_files($context->id, 'mod_forum', 'attachment', $post->id, "filename", false);
if ($files) {
if ($canexport) {
$button = new portfolio_add_button();
}
foreach ($files as $file) {
$filename = $file->get_filename();
$mimetype = $file->get_mimetype();
$iconimage = $OUTPUT->pix_icon(file_file_icon($file), get_mimetype_description($file), 'moodle', array('class' => 'icon'));
$path = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$context->id.'/mod_forum/attachment/'.$post->id.'/'.$filename);
if ($type == 'html') {
$output .= "<a href=\"$path\">$iconimage</a> ";
$output .= "<a href=\"$path\">".s($filename)."</a>";
if ($canexport) {
$button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
$button->set_format_by_file($file);
$output .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
}
$output .= "<br />";
} else if ($type == 'text') {
$output .= "$strattachment ".s($filename).":\n$path\n";
} else { //'returnimages'
if (in_array($mimetype, array('image/gif', 'image/jpeg', 'image/png'))) {
// Image attachments don't get printed as links
$imagereturn .= "<br /><img src=\"$path\" alt=\"\" />";
if ($canexport) {
$button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
$button->set_format_by_file($file);
$imagereturn .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
}
} else {
$output .= "<a href=\"$path\">$iconimage</a> ";
$output .= format_text("<a href=\"$path\">".s($filename)."</a>", FORMAT_HTML, array('context'=>$context));
if ($canexport) {
$button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
$button->set_format_by_file($file);
$output .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
}
$output .= '<br />';
}
}
if (!empty($CFG->enableplagiarism)) {
require_once($CFG->libdir.'/plagiarismlib.php');
$output .= plagiarism_get_links(array('userid' => $post->userid,
'file' => $file,
'cmid' => $cm->id,
'course' => $cm->course,
'forum' => $cm->instance));
$output .= '<br />';
}
}
}
if ($type !== 'separateimages') {
return $output;
} else {
return array($output, $imagereturn);
}
}
////////////////////////////////////////////////////////////////////////////////
// File API //
////////////////////////////////////////////////////////////////////////////////
/**
* Lists all browsable file areas
*
* @package mod_forum
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @return array
*/
function forum_get_file_areas($course, $cm, $context) {
return array(
'attachment' => get_string('areaattachment', 'mod_forum'),
'post' => get_string('areapost', 'mod_forum'),
);
}
/**
* File browsing support for forum module.
*
* @package mod_forum
* @category files
* @param stdClass $browser file browser object
* @param stdClass $areas file areas
* @param stdClass $course course object
* @param stdClass $cm course module
* @param stdClass $context context module
* @param string $filearea file area
* @param int $itemid item ID
* @param string $filepath file path
* @param string $filename file name
* @return file_info instance or null if not found
*/
function forum_get_file_info($browser, $areas, $course, $cm, $context, $filearea, $itemid, $filepath, $filename) {
global $CFG, $DB, $USER;
if ($context->contextlevel != CONTEXT_MODULE) {
return null;
}
// filearea must contain a real area
if (!isset($areas[$filearea])) {
return null;
}
// Note that forum_user_can_see_post() additionally allows access for parent roles
// and it explicitly checks qanda forum type, too. One day, when we stop requiring
// course:managefiles, we will need to extend this.
if (!has_capability('mod/forum:viewdiscussion', $context)) {
return null;
}
if (is_null($itemid)) {
require_once($CFG->dirroot.'/mod/forum/locallib.php');
return new forum_file_info_container($browser, $course, $cm, $context, $areas, $filearea);
}
static $cached = array();
// $cached will store last retrieved post, discussion and forum. To make sure that the cache
// is cleared between unit tests we check if this is the same session
if (!isset($cached['sesskey']) || $cached['sesskey'] != sesskey()) {
$cached = array('sesskey' => sesskey());
}
if (isset($cached['post']) && $cached['post']->id == $itemid) {
$post = $cached['post'];
} else if ($post = $DB->get_record('forum_posts', array('id' => $itemid))) {
$cached['post'] = $post;
} else {
return null;
}
if (isset($cached['discussion']) && $cached['discussion']->id == $post->discussion) {
$discussion = $cached['discussion'];
} else if ($discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion))) {
$cached['discussion'] = $discussion;
} else {
return null;
}
if (isset($cached['forum']) && $cached['forum']->id == $cm->instance) {
$forum = $cached['forum'];
} else if ($forum = $DB->get_record('forum', array('id' => $cm->instance))) {
$cached['forum'] = $forum;
} else {
return null;
}
$fs = get_file_storage();
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
if (!($storedfile = $fs->get_file($context->id, 'mod_forum', $filearea, $itemid, $filepath, $filename))) {
return null;
}
// Checks to see if the user can manage files or is the owner.
// TODO MDL-33805 - Do not use userid here and move the capability check above.
if (!has_capability('moodle/course:managefiles', $context) && $storedfile->get_userid() != $USER->id) {
return null;
}
// Make sure groups allow this user to see this file
if ($discussion->groupid > 0 && !has_capability('moodle/site:accessallgroups', $context)) {
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode == SEPARATEGROUPS && !groups_is_member($discussion->groupid)) {
return null;
}
}
// Make sure we're allowed to see it...
if (!forum_user_can_see_post($forum, $discussion, $post, NULL, $cm)) {
return null;
}
$urlbase = $CFG->wwwroot.'/pluginfile.php';
return new file_info_stored($browser, $context, $storedfile, $urlbase, $itemid, true, true, false, false);
}
/**
* Serves the forum attachments. Implements needed access control ;-)
*
* @package mod_forum
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @param array $options additional options affecting the file serving
* @return bool false if file not found, does not return if found - justsend the file
*/
function forum_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options=array()) {
global $CFG, $DB;
if ($context->contextlevel != CONTEXT_MODULE) {
return false;
}
require_course_login($course, true, $cm);
$areas = forum_get_file_areas($course, $cm, $context);
// filearea must contain a real area
if (!isset($areas[$filearea])) {
return false;
}
$postid = (int)array_shift($args);
if (!$post = $DB->get_record('forum_posts', array('id'=>$postid))) {
return false;
}
if (!$discussion = $DB->get_record('forum_discussions', array('id'=>$post->discussion))) {
return false;
}
if (!$forum = $DB->get_record('forum', array('id'=>$cm->instance))) {
return false;
}
$fs = get_file_storage();
$relativepath = implode('/', $args);
$fullpath = "/$context->id/mod_forum/$filearea/$postid/$relativepath";
if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
return false;
}
// Make sure groups allow this user to see this file
if ($discussion->groupid > 0) {
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode == SEPARATEGROUPS) {
if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $context)) {
return false;
}
}
}
// Make sure we're allowed to see it...
if (!forum_user_can_see_post($forum, $discussion, $post, NULL, $cm)) {
return false;
}
// finally send the file
send_stored_file($file, 0, 0, true, $options); // download MUST be forced - security!
}
/**
* If successful, this function returns the name of the file
*
* @global object
* @param object $post is a full post record, including course and forum
* @param object $forum
* @param object $cm
* @param mixed $mform
* @param string $unused
* @return bool
*/
function forum_add_attachment($post, $forum, $cm, $mform=null, $unused=null) {
global $DB;
if (empty($mform)) {
return false;
}
if (empty($post->attachments)) {
return true; // Nothing to do
}
$context = context_module::instance($cm->id);
$info = file_get_draft_area_info($post->attachments);
$present = ($info['filecount']>0) ? '1' : '';
file_save_draft_area_files($post->attachments, $context->id, 'mod_forum', 'attachment', $post->id,
mod_forum_post_form::attachment_options($forum));
$DB->set_field('forum_posts', 'attachment', $present, array('id'=>$post->id));
return true;
}
/**
* Add a new post in an existing discussion.
*
* @param stdClass $post The post data
* @param mixed $mform The submitted form
* @param string $unused
* @return int
*/
function forum_add_new_post($post, $mform, $unused = null) {
global $USER, $DB;
$discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion));
$forum = $DB->get_record('forum', array('id' => $discussion->forum));
$cm = get_coursemodule_from_instance('forum', $forum->id);
$context = context_module::instance($cm->id);
$privatereplyto = 0;
// Check whether private replies should be enabled for this post.
if ($post->parent) {
$parent = $DB->get_record('forum_posts', array('id' => $post->parent));
if (!empty($parent->privatereplyto)) {
throw new \coding_exception('It should not be possible to reply to a private reply');
}
if (!empty($post->isprivatereply) && forum_user_can_reply_privately($context, $parent)) {
$privatereplyto = $parent->userid;
}
}
$post->created = $post->modified = time();
$post->mailed = FORUM_MAILED_PENDING;
$post->userid = $USER->id;
$post->privatereplyto = $privatereplyto;
$post->attachment = "";
if (!isset($post->totalscore)) {
$post->totalscore = 0;
}
if (!isset($post->mailnow)) {
$post->mailnow = 0;
}
\mod_forum\local\entities\post::add_message_counts($post);
$post->id = $DB->insert_record("forum_posts", $post);
$post->message = file_save_draft_area_files($post->itemid, $context->id, 'mod_forum', 'post', $post->id,
mod_forum_post_form::editor_options($context, null), $post->message);
$DB->set_field('forum_posts', 'message', $post->message, array('id'=>$post->id));
forum_add_attachment($post, $forum, $cm, $mform);
// Update discussion modified date
$DB->set_field("forum_discussions", "timemodified", $post->modified, array("id" => $post->discussion));
$DB->set_field("forum_discussions", "usermodified", $post->userid, array("id" => $post->discussion));
if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum)) {
forum_tp_mark_post_read($post->userid, $post);
}
if (isset($post->tags)) {
core_tag_tag::set_item_tags('mod_forum', 'forum_posts', $post->id, $context, $post->tags);
}
// Let Moodle know that assessable content is uploaded (eg for plagiarism detection)
forum_trigger_content_uploaded_event($post, $cm, 'forum_add_new_post');
return $post->id;
}
/**
* Trigger post updated event.
*
* @param object $post forum post object
* @param object $discussion discussion object
* @param object $context forum context object
* @param object $forum forum object
* @since Moodle 3.8
* @return void
*/
function forum_trigger_post_updated_event($post, $discussion, $context, $forum) {
global $USER;
$params = array(
'context' => $context,
'objectid' => $post->id,
'other' => array(
'discussionid' => $discussion->id,
'forumid' => $forum->id,
'forumtype' => $forum->type,
)
);
if ($USER->id !== $post->userid) {
$params['relateduserid'] = $post->userid;
}
$event = \mod_forum\event\post_updated::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->trigger();
}
/**
* Update a post.
*
* @param stdClass $newpost The post to update
* @param mixed $mform The submitted form
* @param string $unused
* @return bool
*/
function forum_update_post($newpost, $mform, $unused = null) {
global $DB, $USER;
$post = $DB->get_record('forum_posts', array('id' => $newpost->id));
$discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion));
$forum = $DB->get_record('forum', array('id' => $discussion->forum));
$cm = get_coursemodule_from_instance('forum', $forum->id);
$context = context_module::instance($cm->id);
// Allowed modifiable fields.
$modifiablefields = [
'subject',
'message',
'messageformat',
'messagetrust',
'timestart',
'timeend',
'pinned',
'attachments',
];
foreach ($modifiablefields as $field) {
if (isset($newpost->{$field})) {
$post->{$field} = $newpost->{$field};
}
}
$post->modified = time();
if (!$post->parent) { // Post is a discussion starter - update discussion title and times too
$discussion->name = $post->subject;
$discussion->timestart = $post->timestart;
$discussion->timeend = $post->timeend;
if (isset($post->pinned)) {
$discussion->pinned = $post->pinned;
}
}
$post->message = file_save_draft_area_files($newpost->itemid, $context->id, 'mod_forum', 'post', $post->id,
mod_forum_post_form::editor_options($context, $post->id), $post->message);
\mod_forum\local\entities\post::add_message_counts($post);
$DB->update_record('forum_posts', $post);
// Note: Discussion modified time/user are intentionally not updated, to enable them to track the latest new post.
$DB->update_record('forum_discussions', $discussion);
forum_add_attachment($post, $forum, $cm, $mform);
if ($forum->type == 'single' && $post->parent == '0') {
// Updating first post of single discussion type -> updating forum intro.
$forum->intro = $post->message;
$forum->timemodified = time();
$DB->update_record("forum", $forum);
}
if (isset($newpost->tags)) {
core_tag_tag::set_item_tags('mod_forum', 'forum_posts', $post->id, $context, $newpost->tags);
}
if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum)) {
forum_tp_mark_post_read($USER->id, $post);
}
// Let Moodle know that assessable content is uploaded (eg for plagiarism detection)
forum_trigger_content_uploaded_event($post, $cm, 'forum_update_post');
return true;
}
/**
* Given an object containing all the necessary data,
* create a new discussion and return the id
*
* @param object $post
* @param mixed $mform
* @param string $unused
* @param int $userid
* @return object
*/
function forum_add_discussion($discussion, $mform=null, $unused=null, $userid=null) {
global $USER, $CFG, $DB;
$timenow = isset($discussion->timenow) ? $discussion->timenow : time();
if (is_null($userid)) {
$userid = $USER->id;
}
// The first post is stored as a real post, and linked
// to from the discuss entry.
$forum = $DB->get_record('forum', array('id'=>$discussion->forum));
$cm = get_coursemodule_from_instance('forum', $forum->id);
$post = new stdClass();
$post->discussion = 0;
$post->parent = 0;
$post->privatereplyto = 0;
$post->userid = $userid;
$post->created = $timenow;
$post->modified = $timenow;
$post->mailed = FORUM_MAILED_PENDING;
$post->subject = $discussion->name;
$post->message = $discussion->message;
$post->messageformat = $discussion->messageformat;
$post->messagetrust = $discussion->messagetrust;
$post->attachments = isset($discussion->attachments) ? $discussion->attachments : null;
$post->forum = $forum->id; // speedup
$post->course = $forum->course; // speedup
$post->mailnow = $discussion->mailnow;
\mod_forum\local\entities\post::add_message_counts($post);
$post->id = $DB->insert_record("forum_posts", $post);
// TODO: Fix the calling code so that there always is a $cm when this function is called
if (!empty($cm->id) && !empty($discussion->itemid)) { // In "single simple discussions" this may not exist yet
$context = context_module::instance($cm->id);
$text = file_save_draft_area_files($discussion->itemid, $context->id, 'mod_forum', 'post', $post->id,
mod_forum_post_form::editor_options($context, null), $post->message);
$DB->set_field('forum_posts', 'message', $text, array('id'=>$post->id));
}
// Now do the main entry for the discussion, linking to this first post
$discussion->firstpost = $post->id;
$discussion->timemodified = $timenow;
$discussion->usermodified = $post->userid;
$discussion->userid = $userid;
$discussion->assessed = 0;
$post->discussion = $DB->insert_record("forum_discussions", $discussion);
// Finally, set the pointer on the post.
$DB->set_field("forum_posts", "discussion", $post->discussion, array("id"=>$post->id));
if (!empty($cm->id)) {
forum_add_attachment($post, $forum, $cm, $mform, $unused);
}
if (isset($discussion->tags)) {
core_tag_tag::set_item_tags('mod_forum', 'forum_posts', $post->id, context_module::instance($cm->id), $discussion->tags);
}
if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum)) {
forum_tp_mark_post_read($post->userid, $post);
}
// Let Moodle know that assessable content is uploaded (eg for plagiarism detection)
if (!empty($cm->id)) {
forum_trigger_content_uploaded_event($post, $cm, 'forum_add_discussion');
}
return $post->discussion;
}
/**
* Deletes a discussion and handles all associated cleanup.
*
* @global object
* @param object $discussion Discussion to delete
* @param bool $fulldelete True when deleting entire forum
* @param object $course Course
* @param object $cm Course-module
* @param object $forum Forum
* @return bool
*/
function forum_delete_discussion($discussion, $fulldelete, $course, $cm, $forum) {
global $DB, $CFG;
require_once($CFG->libdir.'/completionlib.php');
$result = true;
if ($posts = $DB->get_records("forum_posts", array("discussion" => $discussion->id))) {
foreach ($posts as $post) {
$post->course = $discussion->course;
$post->forum = $discussion->forum;
if (!forum_delete_post($post, 'ignore', $course, $cm, $forum, $fulldelete)) {
$result = false;
}
}
}
forum_tp_delete_read_records(-1, -1, $discussion->id);
// Discussion subscriptions must be removed before discussions because of key constraints.
$DB->delete_records('forum_discussion_subs', array('discussion' => $discussion->id));
if (!$DB->delete_records("forum_discussions", array("id" => $discussion->id))) {
$result = false;
}
// Update completion state if we are tracking completion based on number of posts
// But don't bother when deleting whole thing
if (!$fulldelete) {
$completion = new completion_info($course);
if ($completion->is_enabled($cm) == COMPLETION_TRACKING_AUTOMATIC &&
($forum->completiondiscussions || $forum->completionreplies || $forum->completionposts)) {
$completion->update_state($cm, COMPLETION_INCOMPLETE, $discussion->userid);
}
}
$params = array(
'objectid' => $discussion->id,
'context' => context_module::instance($cm->id),
'other' => array(
'forumid' => $forum->id,
)
);
$event = \mod_forum\event\discussion_deleted::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->trigger();
return $result;
}
/**
* Deletes a single forum post.
*
* @global object
* @param object $post Forum post object
* @param mixed $children Whether to delete children. If false, returns false
* if there are any children (without deleting the post). If true,
* recursively deletes all children. If set to special value 'ignore', deletes
* post regardless of children (this is for use only when deleting all posts
* in a disussion).
* @param object $course Course
* @param object $cm Course-module
* @param object $forum Forum
* @param bool $skipcompletion True to skip updating completion state if it
* would otherwise be updated, i.e. when deleting entire forum anyway.
* @return bool
*/
function forum_delete_post($post, $children, $course, $cm, $forum, $skipcompletion=false) {
global $DB, $CFG, $USER;
require_once($CFG->libdir.'/completionlib.php');
$context = context_module::instance($cm->id);
if ($children !== 'ignore' && ($childposts = $DB->get_records('forum_posts', array('parent'=>$post->id)))) {
if ($children) {
foreach ($childposts as $childpost) {
forum_delete_post($childpost, true, $course, $cm, $forum, $skipcompletion);
}
} else {
return false;
}
}
// Delete ratings.
require_once($CFG->dirroot.'/rating/lib.php');
$delopt = new stdClass;
$delopt->contextid = $context->id;
$delopt->component = 'mod_forum';
$delopt->ratingarea = 'post';
$delopt->itemid = $post->id;
$rm = new rating_manager();
$rm->delete_ratings($delopt);
// Delete attachments.
$fs = get_file_storage();
$fs->delete_area_files($context->id, 'mod_forum', 'attachment', $post->id);
$fs->delete_area_files($context->id, 'mod_forum', 'post', $post->id);
// Delete cached RSS feeds.
if (!empty($CFG->enablerssfeeds)) {
require_once($CFG->dirroot.'/mod/forum/rsslib.php');
forum_rss_delete_file($forum);
}
if ($DB->delete_records("forum_posts", array("id" => $post->id))) {
forum_tp_delete_read_records(-1, $post->id);
// Just in case we are deleting the last post
forum_discussion_update_last_post($post->discussion);
// Update completion state if we are tracking completion based on number of posts
// But don't bother when deleting whole thing
if (!$skipcompletion) {
$completion = new completion_info($course);
if ($completion->is_enabled($cm) == COMPLETION_TRACKING_AUTOMATIC &&
($forum->completiondiscussions || $forum->completionreplies || $forum->completionposts)) {
$completion->update_state($cm, COMPLETION_INCOMPLETE, $post->userid);
}
}
$params = array(
'context' => $context,
'objectid' => $post->id,
'other' => array(
'discussionid' => $post->discussion,
'forumid' => $forum->id,
'forumtype' => $forum->type,
)
);
$post->deleted = 1;
if ($post->userid !== $USER->id) {
$params['relateduserid'] = $post->userid;
}
$event = \mod_forum\event\post_deleted::create($params);
$event->add_record_snapshot('forum_posts', $post);
$event->trigger();
return true;
}
return false;
}
/**
* Sends post content to plagiarism plugin
* @param object $post Forum post object
* @param object $cm Course-module
* @param string $name
* @return bool
*/
function forum_trigger_content_uploaded_event($post, $cm, $name) {
$context = context_module::instance($cm->id);
$fs = get_file_storage();
$files = $fs->get_area_files($context->id, 'mod_forum', 'attachment', $post->id, "timemodified", false);
$params = array(
'context' => $context,
'objectid' => $post->id,
'other' => array(
'content' => $post->message,
'pathnamehashes' => array_keys($files),
'discussionid' => $post->discussion,
'triggeredfrom' => $name,
)
);
$event = \mod_forum\event\assessable_uploaded::create($params);
$event->trigger();
return true;
}
/**
* Given a new post, subscribes or unsubscribes as appropriate.
* Returns some text which describes what happened.
*
* @param object $fromform The submitted form
* @param stdClass $forum The forum record
* @param stdClass $discussion The forum discussion record
* @return string
*/
function forum_post_subscription($fromform, $forum, $discussion) {
global $USER;
if (\mod_forum\subscriptions::is_forcesubscribed($forum)) {
return "";
} else if (\mod_forum\subscriptions::subscription_disabled($forum)) {
$subscribed = \mod_forum\subscriptions::is_subscribed($USER->id, $forum);
if ($subscribed && !has_capability('moodle/course:manageactivities', context_course::instance($forum->course), $USER->id)) {
// This user should not be subscribed to the forum.
\mod_forum\subscriptions::unsubscribe_user($USER->id, $forum);
}
return "";
}
$info = new stdClass();
$info->name = fullname($USER);
$info->discussion = format_string($discussion->name);
$info->forum = format_string($forum->name);
if (isset($fromform->discussionsubscribe) && $fromform->discussionsubscribe) {
if ($result = \mod_forum\subscriptions::subscribe_user_to_discussion($USER->id, $discussion)) {
return html_writer::tag('p', get_string('discussionnowsubscribed', 'forum', $info));
}
} else {
if ($result = \mod_forum\subscriptions::unsubscribe_user_from_discussion($USER->id, $discussion)) {
return html_writer::tag('p', get_string('discussionnownotsubscribed', 'forum', $info));
}
}
return '';
}
/**
* Generate and return the subscribe or unsubscribe link for a forum.
*
* @param object $forum the forum. Fields used are $forum->id and $forum->forcesubscribe.
* @param object $context the context object for this forum.
* @param array $messages text used for the link in its various states
* (subscribed, unsubscribed, forcesubscribed or cantsubscribe).
* Any strings not passed in are taken from the $defaultmessages array
* at the top of the function.
* @param bool $cantaccessagroup
* @param bool $unused1
* @param bool $backtoindex
* @param array $unused2
* @return string
*/
function forum_get_subscribe_link($forum, $context, $messages = array(), $cantaccessagroup = false, $unused1 = true,
$backtoindex = false, $unused2 = null) {
global $CFG, $USER, $PAGE, $OUTPUT;
$defaultmessages = array(
'subscribed' => get_string('unsubscribe', 'forum'),
'unsubscribed' => get_string('subscribe', 'forum'),
'cantaccessgroup' => get_string('no'),
'forcesubscribed' => get_string('everyoneissubscribed', 'forum'),
'cantsubscribe' => get_string('disallowsubscribe','forum')
);
$messages = $messages + $defaultmessages;
if (\mod_forum\subscriptions::is_forcesubscribed($forum)) {
return $messages['forcesubscribed'];
} else if (\mod_forum\subscriptions::subscription_disabled($forum) &&
!has_capability('mod/forum:managesubscriptions', $context)) {
return $messages['cantsubscribe'];
} else if ($cantaccessagroup) {
return $messages['cantaccessgroup'];
} else {
if (!is_enrolled($context, $USER, '', true)) {
return '';
}
$subscribed = \mod_forum\subscriptions::is_subscribed($USER->id, $forum);
if ($subscribed) {
$linktext = $messages['subscribed'];
$linktitle = get_string('subscribestop', 'forum');
} else {
$linktext = $messages['unsubscribed'];
$linktitle = get_string('subscribestart', 'forum');
}
$options = array();
if ($backtoindex) {
$backtoindexlink = '&backtoindex=1';
$options['backtoindex'] = 1;
} else {
$backtoindexlink = '';
}
$options['id'] = $forum->id;
$options['sesskey'] = sesskey();
$url = new moodle_url('/mod/forum/subscribe.php', $options);
return $OUTPUT->single_button($url, $linktext, 'get', array('title' => $linktitle));
}
}
/**
* Returns true if user created new discussion already.
*
* @param int $forumid The forum to check for postings
* @param int $userid The user to check for postings
* @param int $groupid The group to restrict the check to
* @return bool
*/
function forum_user_has_posted_discussion($forumid, $userid, $groupid = null) {
global $CFG, $DB;
$sql = "SELECT 'x'
FROM {forum_discussions} d, {forum_posts} p
WHERE d.forum = ? AND p.discussion = d.id AND p.parent = 0 AND p.userid = ?";
$params = [$forumid, $userid];
if ($groupid) {
$sql .= " AND d.groupid = ?";
$params[] = $groupid;
}
return $DB->record_exists_sql($sql, $params);
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $userid
* @return array
*/
function forum_discussions_user_has_posted_in($forumid, $userid) {
global $CFG, $DB;
$haspostedsql = "SELECT d.id AS id,
d.*
FROM {forum_posts} p,
{forum_discussions} d
WHERE p.discussion = d.id
AND d.forum = ?
AND p.userid = ?";
return $DB->get_records_sql($haspostedsql, array($forumid, $userid));
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $did
* @param int $userid
* @return bool
*/
function forum_user_has_posted($forumid, $did, $userid) {
global $DB;
if (empty($did)) {
// posted in any forum discussion?
$sql = "SELECT 'x'
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
WHERE p.userid = :userid AND d.forum = :forumid";
return $DB->record_exists_sql($sql, array('forumid'=>$forumid,'userid'=>$userid));
} else {
return $DB->record_exists('forum_posts', array('discussion'=>$did,'userid'=>$userid));
}
}
/**
> * Returns true if user posted with mailnow in given discussion
* Returns creation time of the first user's post in given discussion
> * @param int $did Discussion id
* @global object $DB
> * @param int $userid User id
* @param int $did Discussion id
> * @return bool
* @param int $userid User id
> */
* @return int|bool post creation time stamp or return false
> function forum_get_user_posted_mailnow(int $did, int $userid): bool {
*/
> global $DB;
function forum_get_user_posted_time($did, $userid) {
>
global $DB;
> $postmailnow = $DB->get_field('forum_posts', 'MAX(mailnow)', ['userid' => $userid, 'discussion' => $did]);
> return !empty($postmailnow);
$posttime = $DB->get_field('forum_posts', 'MIN(created)', array('userid'=>$userid, 'discussion'=>$did));
> }
if (empty($posttime)) {
>
return false;
> /**
}
return $posttime;
}
/**
* @global object
* @param object $forum
* @param object $currentgroup
* @param int $unused
* @param object $cm
* @param object $context
* @return bool
*/
function forum_user_can_post_discussion($forum, $currentgroup=null, $unused=-1, $cm=NULL, $context=NULL) {
// $forum is an object
global $USER;
// shortcut - guest and not-logged-in users can not post
if (isguestuser() or !isloggedin()) {
return false;
}
if (!$cm) {
debugging('missing cm', DEBUG_DEVELOPER);
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
throw new \moodle_exception('invalidcoursemodule');
}
}
if (!$context) {
$context = context_module::instance($cm->id);
}
if (forum_is_cutoff_date_reached($forum)) {
if (!has_capability('mod/forum:canoverridecutoff', $context)) {
return false;
}
}
if ($currentgroup === null) {
$currentgroup = groups_get_activity_group($cm);
}
$groupmode = groups_get_activity_groupmode($cm);
if ($forum->type == 'news') {
$capname = 'mod/forum:addnews';
} else if ($forum->type == 'qanda') {
$capname = 'mod/forum:addquestion';
} else {
$capname = 'mod/forum:startdiscussion';
}
if (!has_capability($capname, $context)) {
return false;
}
if ($forum->type == 'single') {
return false;
}
if ($forum->type == 'eachuser') {
if (forum_user_has_posted_discussion($forum->id, $USER->id, $currentgroup)) {
return false;
}
}
if (!$groupmode or has_capability('moodle/site:accessallgroups', $context)) {
return true;
}
if ($currentgroup) {
return groups_is_member($currentgroup);
} else {
// no group membership and no accessallgroups means no new discussions
// reverted to 1.7 behaviour in 1.9+, buggy in 1.8.0-1.9.0
return false;
}
}
/**
* This function checks whether the user can reply to posts in a forum
* discussion. Use forum_user_can_post_discussion() to check whether the user
* can start discussions.
*
* @global object
* @global object
* @uses DEBUG_DEVELOPER
* @uses CONTEXT_MODULE
* @uses VISIBLEGROUPS
* @param object $forum forum object
* @param object $discussion
* @param object $user
* @param object $cm
* @param object $course
* @param object $context
* @return bool
*/
function forum_user_can_post($forum, $discussion, $user=NULL, $cm=NULL, $course=NULL, $context=NULL) {
global $USER, $DB;
if (empty($user)) {
$user = $USER;
}
// shortcut - guest and not-logged-in users can not post
if (isguestuser($user) or empty($user->id)) {
return false;
}
if (!isset($discussion->groupid)) {
debugging('incorrect discussion parameter', DEBUG_DEVELOPER);
return false;
}
if (!$cm) {
debugging('missing cm', DEBUG_DEVELOPER);
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
throw new \moodle_exception('invalidcoursemodule');
}
}
if (!$course) {
debugging('missing course', DEBUG_DEVELOPER);
if (!$course = $DB->get_record('course', array('id' => $forum->course))) {
throw new \moodle_exception('invalidcourseid');
}
}
if (!$context) {
$context = context_module::instance($cm->id);
}
if (forum_is_cutoff_date_reached($forum)) {
if (!has_capability('mod/forum:canoverridecutoff', $context)) {
return false;
}
}
// Check whether the discussion is locked.
if (forum_discussion_is_locked($forum, $discussion)) {
if (!has_capability('mod/forum:canoverridediscussionlock', $context)) {
return false;
}
}
// normal users with temporary guest access can not post, suspended users can not post either
if (!is_viewing($context, $user->id) and !is_enrolled($context, $user->id, '', true)) {
return false;
}
if ($forum->type == 'news') {
$capname = 'mod/forum:replynews';
} else {
$capname = 'mod/forum:replypost';
}
if (!has_capability($capname, $context, $user->id)) {
return false;
}
if (!$groupmode = groups_get_activity_groupmode($cm, $course)) {
return true;
}
if (has_capability('moodle/site:accessallgroups', $context)) {
return true;
}
if ($groupmode == VISIBLEGROUPS) {
if ($discussion->groupid == -1) {
// allow students to reply to all participants discussions - this was not possible in Moodle <1.8
return true;
}
return groups_is_member($discussion->groupid);
} else {
//separate groups
if ($discussion->groupid == -1) {
return false;
}
return groups_is_member($discussion->groupid);
}
}
/**
* Check to ensure a user can view a timed discussion.
*
* @param object $discussion
* @param object $user
* @param object $context
* @return boolean returns true if they can view post, false otherwise
*/
function forum_user_can_see_timed_discussion($discussion, $user, $context) {
global $CFG;
// Check that the user can view a discussion that is normally hidden due to access times.
if (!empty($CFG->forum_enabletimedposts)) {
$time = time();
if (($discussion->timestart != 0 && $discussion->timestart > $time)
|| ($discussion->timeend != 0 && $discussion->timeend < $time)) {
if (!has_capability('mod/forum:viewhiddentimedposts', $context, $user->id)) {
return false;
}
}
}
return true;
}
/**
* Check to ensure a user can view a group discussion.
*
* @param object $discussion
* @param object $cm
* @param object $context
* @return boolean returns true if they can view post, false otherwise
*/
function forum_user_can_see_group_discussion($discussion, $cm, $context) {
// If it's a grouped discussion, make sure the user is a member.
if ($discussion->groupid > 0) {
$groupmode = groups_get_activity_groupmode($cm);
if ($groupmode == SEPARATEGROUPS) {
return groups_is_member($discussion->groupid) || has_capability('moodle/site:accessallgroups', $context);
}
}
return true;
}
/**
* @global object
* @global object
* @uses DEBUG_DEVELOPER
* @param object $forum
* @param object $discussion
* @param object $context
* @param object $user
* @return bool
*/
function forum_user_can_see_discussion($forum, $discussion, $context, $user=NULL) {
global $USER, $DB;
if (empty($user) || empty($user->id)) {
$user = $USER;
}
// retrieve objects (yuk)
if (is_numeric($forum)) {
debugging('missing full forum', DEBUG_DEVELOPER);
if (!$forum = $DB->get_record('forum',array('id'=>$forum))) {
return false;
}
}
if (is_numeric($discussion)) {
debugging('missing full discussion', DEBUG_DEVELOPER);
if (!$discussion = $DB->get_record('forum_discussions',array('id'=>$discussion))) {
return false;
}
}
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
throw new \moodle_exception('invalidcoursemodule');
}
if (!has_capability('mod/forum:viewdiscussion', $context)) {
return false;
}
if (!forum_user_can_see_timed_discussion($discussion, $user, $context)) {
return false;
}
if (!forum_user_can_see_group_discussion($discussion, $cm, $context)) {
return false;
}
return true;
}
/**
* Check whether a user can see the specified post.
*
* @param \stdClass $forum The forum to chcek
* @param \stdClass $discussion The discussion the post is in
* @param \stdClass $post The post in question
* @param \stdClass $user The user to test - if not specified, the current user is checked.
* @param \stdClass $cm The Course Module that the forum is in (required).
* @param bool $checkdeleted Whether to check the deleted flag on the post.
* @return bool
*/
function forum_user_can_see_post($forum, $discussion, $post, $user = null, $cm = null, $checkdeleted = true) {
global $CFG, $USER, $DB;
// retrieve objects (yuk)
if (is_numeric($forum)) {
debugging('missing full forum', DEBUG_DEVELOPER);
if (!$forum = $DB->get_record('forum',array('id'=>$forum))) {
return false;
}
}
if (is_numeric($discussion)) {
debugging('missing full discussion', DEBUG_DEVELOPER);
if (!$discussion = $DB->get_record('forum_discussions',array('id'=>$discussion))) {
return false;
}
}
if (is_numeric($post)) {
debugging('missing full post', DEBUG_DEVELOPER);
if (!$post = $DB->get_record('forum_posts',array('id'=>$post))) {
return false;
}
}
if (!isset($post->id) && isset($post->parent)) {
$post->id = $post->parent;
}
if ($checkdeleted && !empty($post->deleted)) {
return false;
}
if (!$cm) {
debugging('missing cm', DEBUG_DEVELOPER);
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
throw new \moodle_exception('invalidcoursemodule');
}
}
// Context used throughout function.
$modcontext = context_module::instance($cm->id);
if (empty($user) || empty($user->id)) {
$user = $USER;
}
$canviewdiscussion = (isset($cm->cache) && !empty($cm->cache->caps['mod/forum:viewdiscussion']))
|| has_capability('mod/forum:viewdiscussion', $modcontext, $user->id);
if (!$canviewdiscussion && !has_all_capabilities(array('moodle/user:viewdetails', 'moodle/user:readuserposts'), context_user::instance($post->userid))) {
return false;
}
if (!forum_post_is_visible_privately($post, $cm)) {
return false;
}
if (isset($cm->uservisible)) {
if (!$cm->uservisible) {
return false;
}
} else {
if (!\core_availability\info_module::is_user_visible($cm, $user->id, false)) {
return false;
}
}
if (!forum_user_can_see_timed_discussion($discussion, $user, $modcontext)) {
return false;
}
if (!forum_user_can_see_group_discussion($discussion, $cm, $modcontext)) {
return false;
}
if ($forum->type == 'qanda') {
if (has_capability('mod/forum:viewqandawithoutposting', $modcontext, $user->id) || $post->userid == $user->id
|| (isset($discussion->firstpost) && $discussion->firstpost == $post->id)) {
return true;
}
$firstpost = forum_get_firstpost_from_discussion($discussion->id);
if ($firstpost->userid == $user->id) {
return true;
}
> $userpostmailnow = forum_get_user_posted_mailnow($discussion->id, $user->id);
$userfirstpost = forum_get_user_posted_time($discussion->id, $user->id);
> if ($userpostmailnow) {
return (($userfirstpost !== false && (time() - $userfirstpost >= $CFG->maxeditingtime)));
> return true;
}
> }
return true;
}
/**
* Returns all forum posts since a given time in specified forum.
*
* @todo Document this functions args
* @global object
* @global object
* @global object
* @global object
*/
function forum_get_recent_mod_activity(&$activities, &$index, $timestart, $courseid, $cmid, $userid=0, $groupid=0) {
global $CFG, $COURSE, $USER, $DB;
if ($COURSE->id == $courseid) {
$course = $COURSE;
} else {
$course = $DB->get_record('course', array('id' => $courseid));
}
$modinfo = get_fast_modinfo($course);
$cm = $modinfo->cms[$cmid];
$params = array($timestart, $cm->instance);
if ($userid) {
$userselect = "AND u.id = ?";
$params[] = $userid;
} else {
$userselect = "";
}
if ($groupid) {
$groupselect = "AND d.groupid = ?";
$params[] = $groupid;
} else {
$groupselect = "";
}
$userfieldsapi = \core_user\fields::for_name();
$allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects;
if (!$posts = $DB->get_records_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid,
d.timestart, d.timeend, d.userid AS duserid,
$allnames, u.email, u.picture, u.imagealt, u.email
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
JOIN {user} u ON u.id = p.userid
WHERE p.created > ? AND f.id = ?
$userselect $groupselect
ORDER BY p.id ASC", $params)) { // order by initial posting date
return;
}
$groupmode = groups_get_activity_groupmode($cm, $course);
$cm_context = context_module::instance($cm->id);
$viewhiddentimed = has_capability('mod/forum:viewhiddentimedposts', $cm_context);
$accessallgroups = has_capability('moodle/site:accessallgroups', $cm_context);
$printposts = array();
foreach ($posts as $post) {
if (!empty($CFG->forum_enabletimedposts) and $USER->id != $post->duserid
and (($post->timestart > 0 and $post->timestart > time()) or ($post->timeend > 0 and $post->timeend < time()))) {
if (!$viewhiddentimed) {
continue;
}
}
if ($groupmode) {
if ($post->groupid == -1 or $groupmode == VISIBLEGROUPS or $accessallgroups) {
// oki (Open discussions have groupid -1)
} else {
// separate mode
if (isguestuser()) {
// shortcut
continue;
}
if (!in_array($post->groupid, $modinfo->get_groups($cm->groupingid))) {
continue;
}
}
}
$printposts[] = $post;
}
if (!$printposts) {
return;
}
$aname = format_string($cm->name,true);
foreach ($printposts as $post) {
$tmpactivity = new stdClass();
$tmpactivity->type = 'forum';
$tmpactivity->cmid = $cm->id;
$tmpactivity->name = $aname;
$tmpactivity->sectionnum = $cm->sectionnum;
$tmpactivity->timestamp = $post->modified;
$tmpactivity->content = new stdClass();
$tmpactivity->content->id = $post->id;
$tmpactivity->content->discussion = $post->discussion;
$tmpactivity->content->subject = format_string($post->subject);
$tmpactivity->content->parent = $post->parent;
$tmpactivity->content->forumtype = $post->forumtype;
$tmpactivity->user = new stdClass();
$additionalfields = array('id' => 'userid', 'picture', 'imagealt', 'email');
$additionalfields = explode(',', implode(',', \core_user\fields::get_picture_fields()));
$tmpactivity->user = username_load_fields_from_object($tmpactivity->user, $post, null, $additionalfields);
$tmpactivity->user->id = $post->userid;
$activities[$index++] = $tmpactivity;
}
return;
}
/**
* Outputs the forum post indicated by $activity.
*
* @param object $activity the activity object the forum resides in
* @param int $courseid the id of the course the forum resides in
* @param bool $detail not used, but required for compatibilty with other modules
* @param int $modnames not used, but required for compatibilty with other modules
* @param bool $viewfullnames not used, but required for compatibilty with other modules
*/
function forum_print_recent_mod_activity($activity, $courseid, $detail, $modnames, $viewfullnames) {
global $OUTPUT;
$content = $activity->content;
if ($content->parent) {
$class = 'reply';
} else {
$class = 'discussion';
}
$tableoptions = [
'border' => '0',
'cellpadding' => '3',
'cellspacing' => '0',
'class' => 'forum-recent'
];
$output = html_writer::start_tag('table', $tableoptions);
$output .= html_writer::start_tag('tr');
$post = (object) ['parent' => $content->parent];
$forum = (object) ['type' => $content->forumtype];
$authorhidden = forum_is_author_hidden($post, $forum);
// Show user picture if author should not be hidden.
if (!$authorhidden) {
$pictureoptions = [
'courseid' => $courseid,
'link' => $authorhidden,
'alttext' => $authorhidden,
];
$picture = $OUTPUT->user_picture($activity->user, $pictureoptions);
$output .= html_writer::tag('td', $picture, ['class' => 'userpicture', 'valign' => 'top']);
}
// Discussion title and author.
$output .= html_writer::start_tag('td', ['class' => $class]);
if ($content->parent) {
$class = 'title';
} else {
// Bold the title of new discussions so they stand out.
$class = 'title bold';
}
$output .= html_writer::start_div($class);
if ($detail) {
$aname = s($activity->name);
$output .= $OUTPUT->image_icon('monologo', $aname, $activity->type);
}
$discussionurl = new moodle_url('/mod/forum/discuss.php', ['d' => $content->discussion]);
$discussionurl->set_anchor('p' . $activity->content->id);
$output .= html_writer::link($discussionurl, $content->subject);
$output .= html_writer::end_div();
$timestamp = userdate_htmltime($activity->timestamp);
if ($authorhidden) {
$authornamedate = $timestamp;
} else {
$fullname = fullname($activity->user, $viewfullnames);
$userurl = new moodle_url('/user/view.php');
$userurl->params(['id' => $activity->user->id, 'course' => $courseid]);
$by = new stdClass();
$by->name = html_writer::link($userurl, $fullname);
$by->date = $timestamp;
$authornamedate = get_string('bynameondate', 'forum', $by);
}
$output .= html_writer::div($authornamedate, 'user');
$output .= html_writer::end_tag('td');
$output .= html_writer::end_tag('tr');
$output .= html_writer::end_tag('table');
echo $output;
}
/**
* recursively sets the discussion field to $discussionid on $postid and all its children
* used when pruning a post
*
* @global object
* @param int $postid
* @param int $discussionid
* @return bool
*/
function forum_change_discussionid($postid, $discussionid) {
global $DB;
$DB->set_field('forum_posts', 'discussion', $discussionid, array('id' => $postid));
if ($posts = $DB->get_records('forum_posts', array('parent' => $postid))) {
foreach ($posts as $post) {
forum_change_discussionid($post->id, $discussionid);
}
}
return true;
}
// Functions to do with read tracking.
/**
* Mark posts as read.
*
* @global object
* @global object
* @param object $user object
* @param array $postids array of post ids
* @return boolean success
*/
function forum_tp_mark_posts_read($user, $postids) {
global $CFG, $DB;
if (!forum_tp_can_track_forums(false, $user)) {
return true;
}
$status = true;
$now = time();
$cutoffdate = $now - ($CFG->forum_oldpostdays * 24 * 3600);
if (empty($postids)) {
return true;
} else if (count($postids) > 200) {
while ($part = array_splice($postids, 0, 200)) {
$status = forum_tp_mark_posts_read($user, $part) && $status;
}
return $status;
}
list($usql, $postidparams) = $DB->get_in_or_equal($postids, SQL_PARAMS_NAMED, 'postid');
$insertparams = array(
'userid1' => $user->id,
'userid2' => $user->id,
'userid3' => $user->id,
'firstread' => $now,
'lastread' => $now,
'cutoffdate' => $cutoffdate,
);
$params = array_merge($postidparams, $insertparams);
if ($CFG->forum_allowforcedreadtracking) {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_FORCED."
OR (f.trackingtype = ".FORUM_TRACKING_OPTIONAL." AND tf.id IS NULL))";
} else {
$trackingsql = "AND ((f.trackingtype = ".FORUM_TRACKING_OPTIONAL." OR f.trackingtype = ".FORUM_TRACKING_FORCED.")
AND tf.id IS NULL)";
}
// First insert any new entries.
$sql = "INSERT INTO {forum_read} (userid, postid, discussionid, forumid, firstread, lastread)
SELECT :userid1, p.id, p.discussion, d.forum, :firstread, :lastread
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
LEFT JOIN {forum_track_prefs} tf ON (tf.userid = :userid2 AND tf.forumid = f.id)
LEFT JOIN {forum_read} fr ON (
fr.userid = :userid3
AND fr.postid = p.id
AND fr.discussionid = d.id
AND fr.forumid = f.id
)
WHERE p.id $usql
AND p.modified >= :cutoffdate
$trackingsql
AND fr.id IS NULL";
$status = $DB->execute($sql, $params) && $status;
// Then update all records.
$updateparams = array(
'userid' => $user->id,
'lastread' => $now,
);
$params = array_merge($postidparams, $updateparams);
$status = $DB->set_field_select('forum_read', 'lastread', $now, '
userid = :userid
AND lastread <> :lastread
AND postid ' . $usql,
$params) && $status;
return $status;
}
/**
* Mark post as read.
* @global object
* @global object
* @param int $userid
* @param int $postid
*/
function forum_tp_add_read_record($userid, $postid) {
global $CFG, $DB;
$now = time();
$cutoffdate = $now - ($CFG->forum_oldpostdays * 24 * 3600);
if (!$DB->record_exists('forum_read', array('userid' => $userid, 'postid' => $postid))) {
$sql = "INSERT INTO {forum_read} (userid, postid, discussionid, forumid, firstread, lastread)
SELECT ?, p.id, p.discussion, d.forum, ?, ?
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
WHERE p.id = ? AND p.modified >= ?";
return $DB->execute($sql, array($userid, $now, $now, $postid, $cutoffdate));
} else {
$sql = "UPDATE {forum_read}
SET lastread = ?
WHERE userid = ? AND postid = ?";
return $DB->execute($sql, array($now, $userid, $userid));
}
}
/**
* If its an old post, do nothing. If the record exists, the maintenance will clear it up later.
*
* @param int $userid The ID of the user to mark posts read for.
* @param object $post The post record for the post to mark as read.
* @param mixed $unused
* @return bool
*/
function forum_tp_mark_post_read($userid, $post, $unused = null) {
if (!forum_tp_is_post_old($post)) {
return forum_tp_add_read_record($userid, $post->id);
} else {
return true;
}
}
/**
* Marks a whole forum as read, for a given user
*
* @global object
* @global object
* @param object $user
* @param int $forumid
* @param int|bool $groupid
* @return bool
*/
function forum_tp_mark_forum_read($user, $forumid, $groupid=false) {
global $CFG, $DB;
$cutoffdate = time() - ($CFG->forum_oldpostdays*24*60*60);
$groupsel = "";
$params = array($user->id, $forumid, $cutoffdate);
if ($groupid !== false) {
$groupsel = " AND (d.groupid = ? OR d.groupid = -1)";
$params[] = $groupid;
}
$sql = "SELECT p.id
FROM {forum_posts} p
LEFT JOIN {forum_discussions} d ON d.id = p.discussion
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = ?)
WHERE d.forum = ?
AND p.modified >= ? AND r.id is NULL
$groupsel";
if ($posts = $DB->get_records_sql($sql, $params)) {
$postids = array_keys($posts);
return forum_tp_mark_posts_read($user, $postids);
}
return true;
}
/**
* Marks a whole discussion as read, for a given user
*
* @global object
* @global object
* @param object $user
* @param int $discussionid
* @return bool
*/
function forum_tp_mark_discussion_read($user, $discussionid) {
global $CFG, $DB;
$cutoffdate = time() - ($CFG->forum_oldpostdays*24*60*60);
$sql = "SELECT p.id
FROM {forum_posts} p
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = ?)
WHERE p.discussion = ?
AND p.modified >= ? AND r.id is NULL";
if ($posts = $DB->get_records_sql($sql, array($user->id, $discussionid, $cutoffdate))) {
$postids = array_keys($posts);
return forum_tp_mark_posts_read($user, $postids);
}
return true;
}
/**
* @global object
* @param int $userid
* @param object $post
*/
function forum_tp_is_post_read($userid, $post) {
global $DB;
return (forum_tp_is_post_old($post) ||
$DB->record_exists('forum_read', array('userid' => $userid, 'postid' => $post->id)));
}
/**
* @global object
* @param object $post
* @param int $time Defautls to time()
*/
function forum_tp_is_post_old($post, $time=null) {
global $CFG;
if (is_null($time)) {
$time = time();
}
return ($post->modified < ($time - ($CFG->forum_oldpostdays * 24 * 3600)));
}
/**
* Returns the count of records for the provided user and course.
* Please note that group access is ignored!
*
* @global object
* @global object
* @param int $userid
* @param int $courseid
* @return array
*/
function forum_tp_get_course_unread_posts($userid, $courseid) {
global $CFG, $DB;
$modinfo = get_fast_modinfo($courseid);
$forumcms = $modinfo->get_instances_of('forum');
if (empty($forumcms)) {
// Return early if the course doesn't have any forum. Will save us a DB query.
return [];
}
$now = floor(time() / MINSECS) * MINSECS; // DB cache friendliness.
$cutoffdate = $now - ($CFG->forum_oldpostdays * DAYSECS);
$params = [
'privatereplyto' => $userid,
'modified' => $cutoffdate,
'readuserid' => $userid,
'trackprefsuser' => $userid,
'courseid' => $courseid,
'trackforumuser' => $userid,
];
if (!empty($CFG->forum_enabletimedposts)) {
$timedsql = "AND d.timestart < :timestart AND (d.timeend = 0 OR d.timeend > :timeend)";
$params['timestart'] = $now;
$params['timeend'] = $now;
} else {
$timedsql = "";
}
if ($CFG->forum_allowforcedreadtracking) {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_FORCED."
OR (f.trackingtype = ".FORUM_TRACKING_OPTIONAL." AND tf.id IS NULL
AND (SELECT trackforums FROM {user} WHERE id = :trackforumuser) = 1))";
} else {
$trackingsql = "AND ((f.trackingtype = ".FORUM_TRACKING_OPTIONAL." OR f.trackingtype = ".FORUM_TRACKING_FORCED.")
AND tf.id IS NULL
AND (SELECT trackforums FROM {user} WHERE id = :trackforumuser) = 1)";
}
$sql = "SELECT f.id, COUNT(p.id) AS unread,
COUNT(p.privatereply) as privatereplies,
COUNT(p.privatereplytouser) as privaterepliestouser
FROM (
SELECT
id,
discussion,
CASE WHEN privatereplyto <> 0 THEN 1 END privatereply,
CASE WHEN privatereplyto = :privatereplyto THEN 1 END privatereplytouser
FROM {forum_posts}
WHERE modified >= :modified
) p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
JOIN {course} c ON c.id = f.course
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = :readuserid)
LEFT JOIN {forum_track_prefs} tf ON (tf.userid = :trackprefsuser AND tf.forumid = f.id)
WHERE f.course = :courseid
AND r.id is NULL
$trackingsql
$timedsql
GROUP BY f.id";
$results = [];
if ($records = $DB->get_records_sql($sql, $params)) {
// Loop through each forum instance to check for capability and count the number of unread posts.
foreach ($forumcms as $cm) {
// Check that the forum instance exists in the query results.
if (!isset($records[$cm->instance])) {
continue;
}
$record = $records[$cm->instance];
$unread = $record->unread;
// Check if the user has the capability to read private replies for this forum instance.
$forumcontext = context_module::instance($cm->id);
if (!has_capability('mod/forum:readprivatereplies', $forumcontext, $userid)) {
// The real unread count would be the total of unread count minus the number of unread private replies plus
// the total unread private replies to the user.
$unread = $record->unread - $record->privatereplies + $record->privaterepliestouser;
}
// Build and add the object to the array of results to be returned.
$results[$record->id] = (object)[
'id' => $record->id,
'unread' => $unread,
];
}
}
return $results;
}
/**
* Returns the count of records for the provided user and forum and [optionally] group.
*
* @global object
* @global object
* @global object
* @param object $cm
* @param object $course
* @param bool $resetreadcache optional, true to reset the function static $readcache var
* @return int
*/
function forum_tp_count_forum_unread_posts($cm, $course, $resetreadcache = false) {
global $CFG, $USER, $DB;
static $readcache = array();
if ($resetreadcache) {
$readcache = array();
}
$forumid = $cm->instance;
if (!isset($readcache[$course->id])) {
$readcache[$course->id] = array();
if ($counts = forum_tp_get_course_unread_posts($USER->id, $course->id)) {
foreach ($counts as $count) {
$readcache[$course->id][$count->id] = $count->unread;
}
}
}
if (empty($readcache[$course->id][$forumid])) {
// no need to check group mode ;-)
return 0;
}
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode != SEPARATEGROUPS) {
return $readcache[$course->id][$forumid];
}
$forumcontext = context_module::instance($cm->id);
if (has_any_capability(['moodle/site:accessallgroups', 'mod/forum:readprivatereplies'], $forumcontext)) {
return $readcache[$course->id][$forumid];
}
require_once($CFG->dirroot.'/course/lib.php');
$modinfo = get_fast_modinfo($course);
$mygroups = $modinfo->get_groups($cm->groupingid);
// add all groups posts
$mygroups[-1] = -1;
list ($groupssql, $groupsparams) = $DB->get_in_or_equal($mygroups, SQL_PARAMS_NAMED);
$now = floor(time() / MINSECS) * MINSECS; // DB Cache friendliness.
$cutoffdate = $now - ($CFG->forum_oldpostdays * DAYSECS);
$params = [
'readuser' => $USER->id,
'forum' => $forumid,
'cutoffdate' => $cutoffdate,
'privatereplyto' => $USER->id,
];
if (!empty($CFG->forum_enabletimedposts)) {
$timedsql = "AND d.timestart < :timestart AND (d.timeend = 0 OR d.timeend > :timeend)";
$params['timestart'] = $now;
$params['timeend'] = $now;
} else {
$timedsql = "";
}
$params = array_merge($params, $groupsparams);
$sql = "SELECT COUNT(p.id)
FROM {forum_posts} p
JOIN {forum_discussions} d ON p.discussion = d.id
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = :readuser)
WHERE d.forum = :forum
AND p.modified >= :cutoffdate AND r.id is NULL
$timedsql
AND d.groupid $groupssql
AND (p.privatereplyto = 0 OR p.privatereplyto = :privatereplyto)";
return $DB->get_field_sql($sql, $params);
}
/**
* Deletes read records for the specified index. At least one parameter must be specified.
*
* @global object
* @param int $userid
* @param int $postid
* @param int $discussionid
* @param int $forumid
* @return bool
*/
function forum_tp_delete_read_records($userid=-1, $postid=-1, $discussionid=-1, $forumid=-1) {
global $DB;
$params = array();
$select = '';
if ($userid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'userid = ?';
$params[] = $userid;
}
if ($postid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'postid = ?';
$params[] = $postid;
}
if ($discussionid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'discussionid = ?';
$params[] = $discussionid;
}
if ($forumid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'forumid = ?';
$params[] = $forumid;
}
if ($select == '') {
return false;
}
else {
return $DB->delete_records_select('forum_read', $select, $params);
}
}
/**
* Get a list of forums not tracked by the user.
*
* @global object
* @global object
* @param int $userid The id of the user to use.
* @param int $courseid The id of the course being checked.
* @return mixed An array indexed by forum id, or false.
*/
function forum_tp_get_untracked_forums($userid, $courseid) {
global $CFG, $DB;
if ($CFG->forum_allowforcedreadtracking) {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_OFF."
OR (f.trackingtype = ".FORUM_TRACKING_OPTIONAL." AND (ft.id IS NOT NULL
OR (SELECT trackforums FROM {user} WHERE id = ?) = 0)))";
} else {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_OFF."
OR ((f.trackingtype = ".FORUM_TRACKING_OPTIONAL." OR f.trackingtype = ".FORUM_TRACKING_FORCED.")
AND (ft.id IS NOT NULL
OR (SELECT trackforums FROM {user} WHERE id = ?) = 0)))";
}
$sql = "SELECT f.id
FROM {forum} f
LEFT JOIN {forum_track_prefs} ft ON (ft.forumid = f.id AND ft.userid = ?)
WHERE f.course = ?
$trackingsql";
if ($forums = $DB->get_records_sql($sql, array($userid, $courseid, $userid))) {
foreach ($forums as $forum) {
$forums[$forum->id] = $forum;
}
return $forums;
} else {
return array();
}
}
/**
* Determine if a user can track forums and optionally a particular forum.
* Checks the site settings, the user settings and the forum settings (if
* requested).
*
* @global object
* @global object
* @global object
* @param mixed $forum The forum object to test, or the int id (optional).
* @param mixed $userid The user object to check for (optional).
* @return boolean
*/
function forum_tp_can_track_forums($forum=false, $user=false) {
global $USER, $CFG, $DB;
// if possible, avoid expensive
// queries
if (empty($CFG->forum_trackreadposts)) {
return false;
}
if ($user === false) {
$user = $USER;
}
if (isguestuser($user) or empty($user->id)) {
return false;
}
if ($forum === false) {
if ($CFG->forum_allowforcedreadtracking) {
// Since we can force tracking, assume yes without a specific forum.
return true;
} else {
return (bool)$user->trackforums;
}
}
// Work toward always passing an object...
if (is_numeric($forum)) {
debugging('Better use proper forum object.', DEBUG_DEVELOPER);
$forum = $DB->get_record('forum', array('id' => $forum), '', 'id,trackingtype');
}
$forumallows = ($forum->trackingtype == FORUM_TRACKING_OPTIONAL);
$forumforced = ($forum->trackingtype == FORUM_TRACKING_FORCED);
if ($CFG->forum_allowforcedreadtracking) {
// If we allow forcing, then forced forums takes procidence over user setting.
return ($forumforced || ($forumallows && (!empty($user->trackforums) && (bool)$user->trackforums)));
} else {
// If we don't allow forcing, user setting trumps.
return ($forumforced || $forumallows) && !empty($user->trackforums);
}
}
/**
* Tells whether a specific forum is tracked by the user. A user can optionally
* be specified. If not specified, the current user is assumed.
*
* @global object
* @global object
* @global object
* @param mixed $forum If int, the id of the forum being checked; if object, the forum object
* @param int $userid The id of the user being checked (optional).
* @return boolean
*/
function forum_tp_is_tracked($forum, $user=false) {
global $USER, $CFG, $DB;
if ($user === false) {
$user = $USER;
}
if (isguestuser($user) or empty($user->id)) {
return false;
}
$cache = cache::make('mod_forum', 'forum_is_tracked');
$forumid = is_numeric($forum) ? $forum : $forum->id;
$key = $forumid . '_' . $user->id;
if ($cachedvalue = $cache->get($key)) {
return $cachedvalue == 'tracked';
}
// Work toward always passing an object...
if (is_numeric($forum)) {
debugging('Better use proper forum object.', DEBUG_DEVELOPER);
$forum = $DB->get_record('forum', array('id' => $forum));
}
if (!forum_tp_can_track_forums($forum, $user)) {
return false;
}
$forumallows = ($forum->trackingtype == FORUM_TRACKING_OPTIONAL);
$forumforced = ($forum->trackingtype == FORUM_TRACKING_FORCED);
$userpref = $DB->get_record('forum_track_prefs', array('userid' => $user->id, 'forumid' => $forum->id));
if ($CFG->forum_allowforcedreadtracking) {
$istracked = $forumforced || ($forumallows && $userpref === false);
} else {
$istracked = ($forumallows || $forumforced) && $userpref === false;
}
// We have to store a string here because the cache API returns false
// when it can't find the key which would be confused with our legitimate
// false value. *sigh*.
$cache->set($key, $istracked ? 'tracked' : 'not');
return $istracked;
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $userid
*/
function forum_tp_start_tracking($forumid, $userid=false) {
global $USER, $DB;
if ($userid === false) {
$userid = $USER->id;
}
return $DB->delete_records('forum_track_prefs', array('userid' => $userid, 'forumid' => $forumid));
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $userid
*/
function forum_tp_stop_tracking($forumid, $userid=false) {
global $USER, $DB;
if ($userid === false) {
$userid = $USER->id;
}
if (!$DB->record_exists('forum_track_prefs', array('userid' => $userid, 'forumid' => $forumid))) {
$track_prefs = new stdClass();
$track_prefs->userid = $userid;
$track_prefs->forumid = $forumid;
$DB->insert_record('forum_track_prefs', $track_prefs);
}
return forum_tp_delete_read_records($userid, -1, -1, $forumid);
}
/**
* Clean old records from the forum_read table.
* @global object
* @global object
* @return void
*/
function forum_tp_clean_read_records() {
global $CFG, $DB;
if (!isset($CFG->forum_oldpostdays)) {
return;
}
// Look for records older than the cutoffdate that are still in the forum_read table.
$cutoffdate = time() - ($CFG->forum_oldpostdays*24*60*60);
//first get the oldest tracking present - we need tis to speedup the next delete query
$sql = "SELECT MIN(fp.modified) AS first
FROM {forum_posts} fp
JOIN {forum_read} fr ON fr.postid=fp.id";
if (!$first = $DB->get_field_sql($sql)) {
// nothing to delete;
return;
}
// now delete old tracking info
$sql = "DELETE
FROM {forum_read}
WHERE postid IN (SELECT fp.id
FROM {forum_posts} fp
WHERE fp.modified >= ? AND fp.modified < ?)";
$DB->execute($sql, array($first, $cutoffdate));
}
/**
* Sets the last post for a given discussion
*
* @global object
* @global object
* @param into $discussionid
* @return bool|int
**/
function forum_discussion_update_last_post($discussionid) {
global $CFG, $DB;
// Check the given discussion exists
if (!$DB->record_exists('forum_discussions', array('id' => $discussionid))) {
return false;
}
// Use SQL to find the last post for this discussion
$sql = "SELECT id, userid, modified
FROM {forum_posts}
WHERE discussion=?
ORDER BY modified DESC";
// Lets go find the last post
if (($lastposts = $DB->get_records_sql($sql, array($discussionid), 0, 1))) {
$lastpost = reset($lastposts);
$discussionobject = new stdClass();
$discussionobject->id = $discussionid;
$discussionobject->usermodified = $lastpost->userid;
$discussionobject->timemodified = $lastpost->modified;
$DB->update_record('forum_discussions', $discussionobject);
return $lastpost->id;
}
// To get here either we couldn't find a post for the discussion (weird)
// or we couldn't update the discussion record (weird x2)
return false;
}
/**
* List the actions that correspond to a view of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = 'r' and edulevel = LEVEL_PARTICIPATING will
* be considered as view action.
*
* @return array
*/
function forum_get_view_actions() {
return array('view discussion', 'search', 'forum', 'forums', 'subscribers', 'view forum');
}
/**
* List the options for forum subscription modes.
* This is used by the settings page and by the mod_form page.
*
* @return array
*/
function forum_get_subscriptionmode_options() {
$options = array();
$options[FORUM_CHOOSESUBSCRIBE] = get_string('subscriptionoptional', 'forum');
$options[FORUM_FORCESUBSCRIBE] = get_string('subscriptionforced', 'forum');
$options[FORUM_INITIALSUBSCRIBE] = get_string('subscriptionauto', 'forum');
$options[FORUM_DISALLOWSUBSCRIBE] = get_string('subscriptiondisabled', 'forum');
return $options;
}
/**
* List the actions that correspond to a post of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = ('c' || 'u' || 'd') and edulevel = LEVEL_PARTICIPATING
* will be considered as post action.
*
* @return array
*/
function forum_get_post_actions() {
return array('add discussion','add post','delete discussion','delete post','move discussion','prune post','update post');
}
/**
* Returns a warning object if a user has reached the number of posts equal to
* the warning/blocking setting, or false if there is no warning to show.
*
* @param int|stdClass $forum the forum id or the forum object
* @param stdClass $cm the course module
* @return stdClass|bool returns an object with the warning information, else
* returns false if no warning is required.
*/
function forum_check_throttling($forum, $cm = null) {
global $CFG, $DB, $USER;
if (is_numeric($forum)) {
$forum = $DB->get_record('forum', ['id' => $forum], 'id, course, blockperiod, blockafter, warnafter', MUST_EXIST);
}
if (!is_object($forum) || !isset($forum->id) || !isset($forum->course)) {
// The passed forum parameter is invalid. This can happen if:
// - a non-object and non-numeric forum is passed; or
// - the forum object does not have an ID or course attributes.
// This is unlikely to happen with properly formed forum record fetched from the database,
// so it's most likely a dev error if we hit such this case.
throw new coding_exception('Invalid forum parameter passed');
}
if (empty($forum->blockafter)) {
return false;
}
if (empty($forum->blockperiod)) {
return false;
}
if (!$cm) {
// Try to fetch the $cm object via get_fast_modinfo() so we don't incur DB reads.
$modinfo = get_fast_modinfo($forum->course);
$forumcms = $modinfo->get_instances_of('forum');
foreach ($forumcms as $tmpcm) {
if ($tmpcm->instance == $forum->id) {
$cm = $tmpcm;
break;
}
}
// Last resort. Try to fetch via get_coursemodule_from_instance().
if (!$cm) {
$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course, false, MUST_EXIST);
}
}
$modcontext = context_module::instance($cm->id);
if (has_capability('mod/forum:postwithoutthrottling', $modcontext)) {
return false;
}
// Get the number of posts in the last period we care about.
$timenow = time();
$timeafter = $timenow - $forum->blockperiod;
$numposts = $DB->count_records_sql('SELECT COUNT(p.id) FROM {forum_posts} p
JOIN {forum_discussions} d
ON p.discussion = d.id WHERE d.forum = ?
AND p.userid = ? AND p.created > ?', array($forum->id, $USER->id, $timeafter));
$a = new stdClass();
$a->blockafter = $forum->blockafter;
$a->numposts = $numposts;
$a->blockperiod = get_string('secondstotime'.$forum->blockperiod);
if ($forum->blockafter <= $numposts) {
$warning = new stdClass();
$warning->canpost = false;
$warning->errorcode = 'forumblockingtoomanyposts';
$warning->module = 'error';
$warning->additional = $a;
$warning->link = $CFG->wwwroot . '/mod/forum/view.php?f=' . $forum->id;
return $warning;
}
if ($forum->warnafter <= $numposts) {
$warning = new stdClass();
$warning->canpost = true;
$warning->errorcode = 'forumblockingalmosttoomanyposts';
$warning->module = 'forum';
$warning->additional = $a;
$warning->link = null;
return $warning;
}
// No warning needs to be shown yet.
return false;
}
/**
* Throws an error if the user is no longer allowed to post due to having reached
* or exceeded the number of posts specified in 'Post threshold for blocking'
* setting.
*
* @since Moodle 2.5
* @param stdClass $thresholdwarning the warning information returned
* from the function forum_check_throttling.
*/
function forum_check_blocking_threshold($thresholdwarning) {
if (!empty($thresholdwarning) && !$thresholdwarning->canpost) {
throw new \moodle_exception($thresholdwarning->errorcode,
$thresholdwarning->module,
$thresholdwarning->link,
$thresholdwarning->additional);
}
}
/**
* Removes all grades from gradebook
*
* @global object
* @global object
* @param int $courseid
* @param string $type optional
*/
function forum_reset_gradebook($courseid, $type='') {
global $CFG, $DB;
$wheresql = '';
$params = array($courseid);
if ($type) {
$wheresql = "AND f.type=?";
$params[] = $type;
}
$sql = "SELECT f.*, cm.idnumber as cmidnumber, f.course as courseid
FROM {forum} f, {course_modules} cm, {modules} m
WHERE m.name='forum' AND m.id=cm.module AND cm.instance=f.id AND f.course=? $wheresql";
if ($forums = $DB->get_records_sql($sql, $params)) {
foreach ($forums as $forum) {
forum_grade_item_update($forum, 'reset', 'reset');
}
}
}
/**
* This function is used by the reset_course_userdata function in moodlelib.
* This function will remove all posts from the specified forum
* and clean up any related data.
*
* @global object
* @global object
* @param $data the data submitted from the reset course.
* @return array status array
*/
function forum_reset_userdata($data) {
global $CFG, $DB;
require_once($CFG->dirroot.'/rating/lib.php');
$componentstr = get_string('modulenameplural', 'forum');
$status = array();
$params = array($data->courseid);
$removeposts = false;
$typesql = "";
if (!empty($data->reset_forum_all)) {
$removeposts = true;
$typesstr = get_string('resetforumsall', 'forum');
$types = array();
} else if (!empty($data->reset_forum_types)){
$removeposts = true;
$types = array();
$sqltypes = array();
$forum_types_all = forum_get_forum_types_all();
foreach ($data->reset_forum_types as $type) {
if (!array_key_exists($type, $forum_types_all)) {
continue;
}
$types[] = $forum_types_all[$type];
$sqltypes[] = $type;
}
if (!empty($sqltypes)) {
list($typesql, $typeparams) = $DB->get_in_or_equal($sqltypes);
$typesql = " AND f.type " . $typesql;
$params = array_merge($params, $typeparams);
}
$typesstr = get_string('resetforums', 'forum').': '.implode(', ', $types);
}
$alldiscussionssql = "SELECT fd.id
FROM {forum_discussions} fd, {forum} f
WHERE f.course=? AND f.id=fd.forum";
$allforumssql = "SELECT f.id
FROM {forum} f
WHERE f.course=?";
$allpostssql = "SELECT fp.id
FROM {forum_posts} fp, {forum_discussions} fd, {forum} f
WHERE f.course=? AND f.id=fd.forum AND fd.id=fp.discussion";
$forumssql = $forums = $rm = null;
// Check if we need to get additional data.
if ($removeposts || !empty($data->reset_forum_ratings) || !empty($data->reset_forum_tags)) {
// Set this up if we have to remove ratings.
$rm = new rating_manager();
$ratingdeloptions = new stdClass;
$ratingdeloptions->component = 'mod_forum';
$ratingdeloptions->ratingarea = 'post';
// Get the forums for actions that require it.
$forumssql = "$allforumssql $typesql";
$forums = $DB->get_records_sql($forumssql, $params);
}
if ($removeposts) {
$discussionssql = "$alldiscussionssql $typesql";
$postssql = "$allpostssql $typesql";
// now get rid of all attachments
$fs = get_file_storage();
if ($forums) {
foreach ($forums as $forumid=>$unused) {
if (!$cm = get_coursemodule_from_instance('forum', $forumid)) {
continue;
}
$context = context_module::instance($cm->id);
$fs->delete_area_files($context->id, 'mod_forum', 'attachment');
$fs->delete_area_files($context->id, 'mod_forum', 'post');
//remove ratings
$ratingdeloptions->contextid = $context->id;
$rm->delete_ratings($ratingdeloptions);
core_tag_tag::delete_instances('mod_forum', null, $context->id);
}
}
// first delete all read flags
$DB->delete_records_select('forum_read', "forumid IN ($forumssql)", $params);
// remove tracking prefs
$DB->delete_records_select('forum_track_prefs', "forumid IN ($forumssql)", $params);
// remove posts from queue
$DB->delete_records_select('forum_queue', "discussionid IN ($discussionssql)", $params);
// all posts - initial posts must be kept in single simple discussion forums
$DB->delete_records_select('forum_posts', "discussion IN ($discussionssql) AND parent <> 0", $params); // first all children
$DB->delete_records_select('forum_posts', "discussion IN ($discussionssql AND f.type <> 'single') AND parent = 0", $params); // now the initial posts for non single simple
// finally all discussions except single simple forums
$DB->delete_records_select('forum_discussions', "forum IN ($forumssql AND f.type <> 'single')", $params);
// remove all grades from gradebook
if (empty($data->reset_gradebook_grades)) {
if (empty($types)) {
forum_reset_gradebook($data->courseid);
} else {
foreach ($types as $type) {
forum_reset_gradebook($data->courseid, $type);
}
}
}
$status[] = array('component'=>$componentstr, 'item'=>$typesstr, 'error'=>false);
}
// remove all ratings in this course's forums
if (!empty($data->reset_forum_ratings)) {
if ($forums) {
foreach ($forums as $forumid=>$unused) {
if (!$cm = get_coursemodule_from_instance('forum', $forumid)) {
continue;
}
$context = context_module::instance($cm->id);
//remove ratings
$ratingdeloptions->contextid = $context->id;
$rm->delete_ratings($ratingdeloptions);
}
}
// remove all grades from gradebook
if (empty($data->reset_gradebook_grades)) {
forum_reset_gradebook($data->courseid);
}
}
// Remove all the tags.
if (!empty($data->reset_forum_tags)) {
if ($forums) {
foreach ($forums as $forumid => $unused) {
if (!$cm = get_coursemodule_from_instance('forum', $forumid)) {
continue;
}
$context = context_module::instance($cm->id);
core_tag_tag::delete_instances('mod_forum', null, $context->id);
}
}
$status[] = array('component' => $componentstr, 'item' => get_string('tagsdeleted', 'forum'), 'error' => false);
}
// remove all digest settings unconditionally - even for users still enrolled in course.
if (!empty($data->reset_forum_digests)) {
$DB->delete_records_select('forum_digests', "forum IN ($allforumssql)", $params);
$status[] = array('component' => $componentstr, 'item' => get_string('resetdigests', 'forum'), 'error' => false);
}
// remove all subscriptions unconditionally - even for users still enrolled in course
if (!empty($data->reset_forum_subscriptions)) {
$DB->delete_records_select('forum_subscriptions', "forum IN ($allforumssql)", $params);
$DB->delete_records_select('forum_discussion_subs', "forum IN ($allforumssql)", $params);
$status[] = array('component' => $componentstr, 'item' => get_string('resetsubscriptions', 'forum'), 'error' => false);
}
// remove all tracking prefs unconditionally - even for users still enrolled in course
if (!empty($data->reset_forum_track_prefs)) {
$DB->delete_records_select('forum_track_prefs', "forumid IN ($allforumssql)", $params);
$status[] = array('component'=>$componentstr, 'item'=>get_string('resettrackprefs','forum'), 'error'=>false);
}
/// updating dates - shift may be negative too
if ($data->timeshift) {
// Any changes to the list of dates that needs to be rolled should be same during course restore and course reset.
// See MDL-9367.
shift_course_mod_dates('forum', array('assesstimestart', 'assesstimefinish'), $data->timeshift, $data->courseid);
$status[] = array('component'=>$componentstr, 'item'=>get_string('datechanged'), 'error'=>false);
}
return $status;
}
/**
* Called by course/reset.php
*
* @param MoodleQuickForm $mform form passed by reference
*/
function forum_reset_course_form_definition(&$mform) {
$mform->addElement('header', 'forumheader', get_string('modulenameplural', 'forum'));
$mform->addElement('checkbox', 'reset_forum_all', get_string('resetforumsall','forum'));
$mform->addElement('select', 'reset_forum_types', get_string('resetforums', 'forum'), forum_get_forum_types_all(), array('multiple' => 'multiple'));
$mform->setAdvanced('reset_forum_types');
$mform->disabledIf('reset_forum_types', 'reset_forum_all', 'checked');
$mform->addElement('checkbox', 'reset_forum_digests', get_string('resetdigests','forum'));
$mform->setAdvanced('reset_forum_digests');
$mform->addElement('checkbox', 'reset_forum_subscriptions', get_string('resetsubscriptions','forum'));
$mform->setAdvanced('reset_forum_subscriptions');
$mform->addElement('checkbox', 'reset_forum_track_prefs', get_string('resettrackprefs','forum'));
$mform->setAdvanced('reset_forum_track_prefs');
$mform->disabledIf('reset_forum_track_prefs', 'reset_forum_all', 'checked');
$mform->addElement('checkbox', 'reset_forum_ratings', get_string('deleteallratings'));
$mform->disabledIf('reset_forum_ratings', 'reset_forum_all', 'checked');
$mform->addElement('checkbox', 'reset_forum_tags', get_string('removeallforumtags', 'forum'));
$mform->disabledIf('reset_forum_tags', 'reset_forum_all', 'checked');
}
/**
* Course reset form defaults.
* @return array
*/
function forum_reset_course_form_defaults($course) {
return array('reset_forum_all'=>1, 'reset_forum_digests' => 0, 'reset_forum_subscriptions'=>0, 'reset_forum_track_prefs'=>0, 'reset_forum_ratings'=>1);
}
/**
* Returns array of forum layout modes
*
* @param bool $useexperimentalui use experimental layout modes or not
* @return array
*/
function forum_get_layout_modes(bool $useexperimentalui = false) {
$modes = [
FORUM_MODE_FLATOLDEST => get_string('modeflatoldestfirst', 'forum'),
FORUM_MODE_FLATNEWEST => get_string('modeflatnewestfirst', 'forum'),
FORUM_MODE_THREADED => get_string('modethreaded', 'forum')
];
if ($useexperimentalui) {
$modes[FORUM_MODE_NESTED_V2] = get_string('modenestedv2', 'forum');
} else {
$modes[FORUM_MODE_NESTED] = get_string('modenested', 'forum');
}
return $modes;
}
/**
* Returns array of forum types chooseable on the forum editing form
*
* @return array
*/
function forum_get_forum_types() {
return array ('general' => get_string('generalforum', 'forum'),
'eachuser' => get_string('eachuserforum', 'forum'),
'single' => get_string('singleforum', 'forum'),
'qanda' => get_string('qandaforum', 'forum'),
'blog' => get_string('blogforum', 'forum'));
}
/**
* Returns array of all forum layout modes
*
* @return array
*/
function forum_get_forum_types_all() {
return array ('news' => get_string('namenews','forum'),
'social' => get_string('namesocial','forum'),
'general' => get_string('generalforum', 'forum'),
'eachuser' => get_string('eachuserforum', 'forum'),
'single' => get_string('singleforum', 'forum'),
'qanda' => get_string('qandaforum', 'forum'),
'blog' => get_string('blogforum', 'forum'));
}
/**
* Returns all other caps used in module
*
* @return array
*/
function forum_get_extra_capabilities() {
return ['moodle/rating:view', 'moodle/rating:viewany', 'moodle/rating:viewall', 'moodle/rating:rate'];
}
/**
* Adds module specific settings to the settings block
*
* @param settings_navigation $settings The settings navigation object
* @param navigation_node $forumnode The node to add module settings to
*/
function forum_extend_settings_navigation(settings_navigation $settingsnav, navigation_node $forumnode) {
global $USER, $CFG;
if (empty($settingsnav->get_page()->cm->context)) {
$settingsnav->get_page()->cm->context = context_module::instance($settingsnav->get_page()->cm->instance);
}
$vaultfactory = mod_forum\local\container::get_vault_factory();
$managerfactory = mod_forum\local\container::get_manager_factory();
$legacydatamapperfactory = mod_forum\local\container::get_legacy_data_mapper_factory();
$forumvault = $vaultfactory->get_forum_vault();
$forumentity = $forumvault->get_from_id($settingsnav->get_page()->cm->instance);
$forumobject = $legacydatamapperfactory->get_forum_data_mapper()->to_legacy_object($forumentity);
$params = $settingsnav->get_page()->url->params();
if (!empty($params['d'])) {
$discussionid = $params['d'];
}
// For some actions you need to be enrolled, being admin is not enough sometimes here.
$enrolled = is_enrolled($settingsnav->get_page()->context, $USER, '', false);
$activeenrolled = is_enrolled($settingsnav->get_page()->context, $USER, '', true);
$canmanage = has_capability('mod/forum:managesubscriptions', $settingsnav->get_page()->context);
$subscriptionmode = \mod_forum\subscriptions::get_subscription_mode($forumobject);
$cansubscribe = $activeenrolled && !\mod_forum\subscriptions::is_forcesubscribed($forumobject) &&
(!\mod_forum\subscriptions::subscription_disabled($forumobject) || $canmanage);
if ($canmanage) {
$mode = $forumnode->add(get_string('subscriptionmode', 'forum'), null, navigation_node::TYPE_CONTAINER);
$mode->add_class('subscriptionmode');
$mode->set_show_in_secondary_navigation(false);
// Optional subscription mode.
$allowchoicestring = get_string('subscriptionoptional', 'forum');
$allowchoiceaction = new action_link(
new moodle_url('/mod/forum/subscribe.php', [
'id' => $forumobject->id,
'mode' => FORUM_CHOOSESUBSCRIBE,
'sesskey' => sesskey(),
]),
$allowchoicestring,
new confirm_action(get_string('subscriptionmodeconfirm', 'mod_forum', $allowchoicestring))
);
$allowchoice = $mode->add($allowchoicestring, $allowchoiceaction, navigation_node::TYPE_SETTING);
// Forced subscription mode.
$forceforeverstring = get_string('subscriptionforced', 'forum');
$forceforeveraction = new action_link(
new moodle_url('/mod/forum/subscribe.php', [
'id' => $forumobject->id,
'mode' => FORUM_FORCESUBSCRIBE,
'sesskey' => sesskey(),
]),
$forceforeverstring,
new confirm_action(get_string('subscriptionmodeconfirm', 'mod_forum', $forceforeverstring))
);
$forceforever = $mode->add($forceforeverstring, $forceforeveraction, navigation_node::TYPE_SETTING);
// Initial subscription mode.
$forceinitiallystring = get_string('subscriptionauto', 'forum');
$forceinitiallyaction = new action_link(
new moodle_url('/mod/forum/subscribe.php', [
'id' => $forumobject->id,
'mode' => FORUM_INITIALSUBSCRIBE,
'sesskey' => sesskey(),
]),
$forceinitiallystring,
new confirm_action(get_string('subscriptionmodeconfirm', 'mod_forum', $forceinitiallystring))
);
$forceinitially = $mode->add($forceinitiallystring, $forceinitiallyaction, navigation_node::TYPE_SETTING);
// Disabled subscription mode.
$disallowchoicestring = get_string('subscriptiondisabled', 'forum');
$disallowchoiceaction = new action_link(
new moodle_url('/mod/forum/subscribe.php', [
'id' => $forumobject->id,
'mode' => FORUM_DISALLOWSUBSCRIBE,
'sesskey' => sesskey(),
]),
$disallowchoicestring,
new confirm_action(get_string('subscriptionmodeconfirm', 'mod_forum', $disallowchoicestring))
);
$disallowchoice = $mode->add($disallowchoicestring, $disallowchoiceaction, navigation_node::TYPE_SETTING);
switch ($subscriptionmode) {
case FORUM_CHOOSESUBSCRIBE : // 0
$allowchoice->action = null;
$allowchoice->add_class('activesetting');
$allowchoice->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
case FORUM_FORCESUBSCRIBE : // 1
$forceforever->action = null;
$forceforever->add_class('activesetting');
$forceforever->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
case FORUM_INITIALSUBSCRIBE : // 2
$forceinitially->action = null;
$forceinitially->add_class('activesetting');
$forceinitially->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
case FORUM_DISALLOWSUBSCRIBE : // 3
$disallowchoice->action = null;
$disallowchoice->add_class('activesetting');
$disallowchoice->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
}
} else if ($activeenrolled) {
switch ($subscriptionmode) {
case FORUM_CHOOSESUBSCRIBE : // 0
$notenode = $forumnode->add(get_string('subscriptionoptional', 'forum'));
break;
case FORUM_FORCESUBSCRIBE : // 1
$notenode = $forumnode->add(get_string('subscriptionforced', 'forum'));
break;
case FORUM_INITIALSUBSCRIBE : // 2
$notenode = $forumnode->add(get_string('subscriptionauto', 'forum'));
break;
case FORUM_DISALLOWSUBSCRIBE : // 3
$notenode = $forumnode->add(get_string('subscriptiondisabled', 'forum'));
break;
}
}
if (has_capability('mod/forum:viewsubscribers', $settingsnav->get_page()->context)) {
$url = new moodle_url('/mod/forum/subscribers.php', ['id' => $forumobject->id, 'edit' => 'off']);
$forumnode->add(get_string('subscriptions', 'forum'), $url, navigation_node::TYPE_SETTING, null, 'forumsubscriptions');
}
// Display all forum reports user has access to.
if (isloggedin() && !isguestuser()) {
$reportnames = array_keys(core_component::get_plugin_list('forumreport'));
foreach ($reportnames as $reportname) {
if (has_capability("forumreport/{$reportname}:view", $settingsnav->get_page()->context)) {
$reportlinkparams = [
'courseid' => $forumobject->course,
'forumid' => $forumobject->id,
];
$reportlink = new moodle_url("/mod/forum/report/{$reportname}/index.php", $reportlinkparams);
$forumnode->add(get_string('reports'), $reportlink, navigation_node::TYPE_CONTAINER);
}
}
}
if ($enrolled && forum_tp_can_track_forums($forumobject)) { // keep tracking info for users with suspended enrolments
if ($forumobject->trackingtype == FORUM_TRACKING_OPTIONAL
|| ((!$CFG->forum_allowforcedreadtracking) && $forumobject->trackingtype == FORUM_TRACKING_FORCED)) {
if (forum_tp_is_tracked($forumobject)) {
$linktext = get_string('notrackforum', 'forum');
} else {
$linktext = get_string('trackforum', 'forum');
}
$url = new moodle_url('/mod/forum/settracking.php', array(
'id' => $forumobject->id,
'sesskey' => sesskey(),
));
$forumnode->add($linktext, $url, navigation_node::TYPE_SETTING);
}
}
if (!isloggedin() && $settingsnav->get_page()->course->id == SITEID) {
$userid = guest_user()->id;
} else {
$userid = $USER->id;
}
$hascourseaccess = ($settingsnav->get_page()->course->id == SITEID) ||
can_access_course($settingsnav->get_page()->course, $userid);
$enablerssfeeds = !empty($CFG->enablerssfeeds) && !empty($CFG->forum_enablerssfeeds);
if ($enablerssfeeds && $forumobject->rsstype && $forumobject->rssarticles && $hascourseaccess) {
if (!function_exists('rss_get_url')) {
require_once("$CFG->libdir/rsslib.php");
}
if ($forumobject->rsstype == 1) {
$string = get_string('rsssubscriberssdiscussions','forum');
} else {
$string = get_string('rsssubscriberssposts','forum');
}
$url = new moodle_url(rss_get_url($settingsnav->get_page()->cm->context->id, $userid, "mod_forum",
$forumobject->id));
$forumnode->add($string, $url, settings_navigation::TYPE_SETTING, null, null, new pix_icon('i/rss', ''));
}
$capabilitymanager = $managerfactory->get_capability_manager($forumentity);
if ($capabilitymanager->can_export_forum($USER)) {
$url = new moodle_url('/mod/forum/export.php', ['id' => $forumobject->id]);
$forumnode->add(get_string('export', 'mod_forum'), $url, navigation_node::TYPE_SETTING);
< }
< }
<
< /**
< * Adds information about unread messages, that is only required for the course view page (and
< * similar), to the course-module object.
< * @param cm_info $cm Course-module object
< */
< function forum_cm_info_view(cm_info $cm) {
< global $CFG;
<
< if (forum_tp_can_track_forums()) {
< if ($unread = forum_tp_count_forum_unread_posts($cm, $cm->get_course())) {
< $out = '<span class="badge badge-secondary">';
< if ($unread == 1) {
< $out .= get_string('unreadpostsone', 'forum');
< } else {
< $out .= get_string('unreadpostsnumber', 'forum', $unread);
< }
< $out .= '</span>';
< $cm->set_after_link($out);
< }
}
}
/**
* Return a list of page types
* @param string $pagetype current page type
* @param stdClass $parentcontext Block's parent context
* @param stdClass $currentcontext Current context of block
*/
function forum_page_type_list($pagetype, $parentcontext, $currentcontext) {
$forum_pagetype = array(
'mod-forum-*'=>get_string('page-mod-forum-x', 'forum'),
'mod-forum-view'=>get_string('page-mod-forum-view', 'forum'),
'mod-forum-discuss'=>get_string('page-mod-forum-discuss', 'forum')
);
return $forum_pagetype;
}
/**
* Gets all of the courses where the provided user has posted in a forum.
*
* @global moodle_database $DB The database connection
* @param stdClass $user The user who's posts we are looking for
* @param bool $discussionsonly If true only look for discussions started by the user
* @param bool $includecontexts If set to trye contexts for the courses will be preloaded
* @param int $limitfrom The offset of records to return
* @param int $limitnum The number of records to return
* @return array An array of courses
*/
function forum_get_courses_user_posted_in($user, $discussionsonly = false, $includecontexts = true, $limitfrom = null, $limitnum = null) {
global $DB;
// If we are only after discussions we need only look at the forum_discussions
// table and join to the userid there. If we are looking for posts then we need
// to join to the forum_posts table.
if (!$discussionsonly) {
$subquery = "(SELECT DISTINCT fd.course
FROM {forum_discussions} fd
JOIN {forum_posts} fp ON fp.discussion = fd.id
WHERE fp.userid = :userid )";
} else {
$subquery= "(SELECT DISTINCT fd.course
FROM {forum_discussions} fd
WHERE fd.userid = :userid )";
}
$params = array('userid' => $user->id);
// Join to the context table so that we can preload contexts if required.
if ($includecontexts) {
$ctxselect = ', ' . context_helper::get_preload_record_columns_sql('ctx');
$ctxjoin = "LEFT JOIN {context} ctx ON (ctx.instanceid = c.id AND ctx.contextlevel = :contextlevel)";
$params['contextlevel'] = CONTEXT_COURSE;
} else {
$ctxselect = '';
$ctxjoin = '';
}
// Now we need to get all of the courses to search.
// All courses where the user has posted within a forum will be returned.
$sql = "SELECT c.* $ctxselect
FROM {course} c
$ctxjoin
WHERE c.id IN ($subquery)";
$courses = $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
if ($includecontexts) {
array_map('context_helper::preload_from_record', $courses);
}
return $courses;
}
/**
* Gets all of the forums a user has posted in for one or more courses.
*
* @global moodle_database $DB
* @param stdClass $user
* @param array $courseids An array of courseids to search or if not provided
* all courses the user has posted within
* @param bool $discussionsonly If true then only forums where the user has started
* a discussion will be returned.
* @param int $limitfrom The offset of records to return
* @param int $limitnum The number of records to return
* @return array An array of forums the user has posted within in the provided courses
*/
function forum_get_forums_user_posted_in($user, array $courseids = null, $discussionsonly = false, $limitfrom = null, $limitnum = null) {
global $DB;
if (!is_null($courseids)) {
list($coursewhere, $params) = $DB->get_in_or_equal($courseids, SQL_PARAMS_NAMED, 'courseid');
$coursewhere = ' AND f.course '.$coursewhere;
} else {
$coursewhere = '';
$params = array();
}
$params['userid'] = $user->id;
$params['forum'] = 'forum';
if ($discussionsonly) {
$join = 'JOIN {forum_discussions} ff ON ff.forum = f.id';
} else {
$join = 'JOIN {forum_discussions} fd ON fd.forum = f.id
JOIN {forum_posts} ff ON ff.discussion = fd.id';
}
$sql = "SELECT f.*, cm.id AS cmid
FROM {forum} f
JOIN {course_modules} cm ON cm.instance = f.id
JOIN {modules} m ON m.id = cm.module
JOIN (
SELECT f.id
FROM {forum} f
{$join}
WHERE ff.userid = :userid
GROUP BY f.id
) j ON j.id = f.id
WHERE m.name = :forum
{$coursewhere}";
$courseforums = $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
return $courseforums;
}
/**
* Returns posts made by the selected user in the requested courses.
*
* This method can be used to return all of the posts made by the requested user
* within the given courses.
* For each course the access of the current user and requested user is checked
* and then for each post access to the post and forum is checked as well.
*
* This function is safe to use with usercapabilities.
*
* @global moodle_database $DB
* @param stdClass $user The user whose posts we want to get
* @param array $courses The courses to search
* @param bool $musthaveaccess If set to true errors will be thrown if the user
* cannot access one or more of the courses to search
* @param bool $discussionsonly If set to true only discussion starting posts
* will be returned.
* @param int $limitfrom The offset of records to return
* @param int $limitnum The number of records to return
* @return stdClass An object the following properties
* ->totalcount: the total number of posts made by the requested user
* that the current user can see.
* ->courses: An array of courses the current user can see that the
* requested user has posted in.
* ->forums: An array of forums relating to the posts returned in the
* property below.
* ->posts: An array containing the posts to show for this request.
*/
function forum_get_posts_by_user($user, array $courses, $musthaveaccess = false, $discussionsonly = false, $limitfrom = 0, $limitnum = 50) {
global $DB, $USER, $CFG;
$return = new stdClass;
$return->totalcount = 0; // The total number of posts that the current user is able to view
$return->courses = array(); // The courses the current user can access
$return->forums = array(); // The forums that the current user can access that contain posts
$return->posts = array(); // The posts to display
// First up a small sanity check. If there are no courses to check we can
// return immediately, there is obviously nothing to search.
if (empty($courses)) {
return $return;
}
// A couple of quick setups
$isloggedin = isloggedin();
$isguestuser = $isloggedin && isguestuser();
$iscurrentuser = $isloggedin && $USER->id == $user->id;
// Checkout whether or not the current user has capabilities over the requested
// user and if so they have the capabilities required to view the requested
// users content.
$usercontext = context_user::instance($user->id, MUST_EXIST);
$hascapsonuser = !$iscurrentuser && $DB->record_exists('role_assignments', array('userid' => $USER->id, 'contextid' => $usercontext->id));
$hascapsonuser = $hascapsonuser && has_all_capabilities(array('moodle/user:viewdetails', 'moodle/user:readuserposts'), $usercontext);
// Before we actually search each course we need to check the user's access to the
// course. If the user doesn't have the appropraite access then we either throw an
// error if a particular course was requested or we just skip over the course.
foreach ($courses as $course) {
$coursecontext = context_course::instance($course->id, MUST_EXIST);
if ($iscurrentuser || $hascapsonuser) {
// If it is the current user, or the current user has capabilities to the
// requested user then all we need to do is check the requested users
// current access to the course.
// Note: There is no need to check group access or anything of the like
// as either the current user is the requested user, or has granted
// capabilities on the requested user. Either way they can see what the
// requested user posted, although its VERY unlikely in the `parent` situation
// that the current user will be able to view the posts in context.
if (!is_viewing($coursecontext, $user) && !is_enrolled($coursecontext, $user)) {
// Need to have full access to a course to see the rest of own info
if ($musthaveaccess) {
throw new \moodle_exception('errorenrolmentrequired', 'forum');
}
continue;
}
} else {
// Check whether the current user is enrolled or has access to view the course
// if they don't we immediately have a problem.
if (!can_access_course($course)) {
if ($musthaveaccess) {
throw new \moodle_exception('errorenrolmentrequired', 'forum');
}
continue;
}
// If groups are in use and enforced throughout the course then make sure
// we can meet in at least one course level group.
// Note that we check if either the current user or the requested user have
// the capability to access all groups. This is because with that capability
// a user in group A could post in the group B forum. Grrrr.
if (groups_get_course_groupmode($course) == SEPARATEGROUPS && $course->groupmodeforce
&& !has_capability('moodle/site:accessallgroups', $coursecontext) && !has_capability('moodle/site:accessallgroups', $coursecontext, $user->id)) {
// If its the guest user to bad... the guest user cannot access groups
if (!$isloggedin or $isguestuser) {
// do not use require_login() here because we might have already used require_login($course)
if ($musthaveaccess) {
redirect(get_login_url());
}
continue;
}
// Get the groups of the current user
$mygroups = array_keys(groups_get_all_groups($course->id, $USER->id, $course->defaultgroupingid, 'g.id, g.name'));
// Get the groups the requested user is a member of
$usergroups = array_keys(groups_get_all_groups($course->id, $user->id, $course->defaultgroupingid, 'g.id, g.name'));
// Check whether they are members of the same group. If they are great.
$intersect = array_intersect($mygroups, $usergroups);
if (empty($intersect)) {
// But they're not... if it was a specific course throw an error otherwise
// just skip this course so that it is not searched.
if ($musthaveaccess) {
throw new \moodle_exception("groupnotamember", '', $CFG->wwwroot."/course/view.php?id=$course->id");
}
continue;
}
}
}
// Woo hoo we got this far which means the current user can search this
// this course for the requested user. Although this is only the course accessibility
// handling that is complete, the forum accessibility tests are yet to come.
$return->courses[$course->id] = $course;
}
// No longer beed $courses array - lose it not it may be big
unset($courses);
// Make sure that we have some courses to search
if (empty($return->courses)) {
// If we don't have any courses to search then the reality is that the current
// user doesn't have access to any courses is which the requested user has posted.
// Although we do know at this point that the requested user has posts.
if ($musthaveaccess) {
throw new \moodle_exception('permissiondenied');
} else {
return $return;
}
}
// Next step: Collect all of the forums that we will want to search.
// It is important to note that this step isn't actually about searching, it is
// about determining which forums we can search by testing accessibility.
$forums = forum_get_forums_user_posted_in($user, array_keys($return->courses), $discussionsonly);
// Will be used to build the where conditions for the search
$forumsearchwhere = array();
// Will be used to store the where condition params for the search
$forumsearchparams = array();
// Will record forums where the user can freely access everything
$forumsearchfullaccess = array();
// DB caching friendly
$now = floor(time() / 60) * 60;
// For each course to search we want to find the forums the user has posted in
// and providing the current user can access the forum create a search condition
// for the forum to get the requested users posts.
foreach ($return->courses as $course) {
// Now we need to get the forums
$modinfo = get_fast_modinfo($course);
if (empty($modinfo->instances['forum'])) {
// hmmm, no forums? well at least its easy... skip!
continue;
}
// Iterate
foreach ($modinfo->get_instances_of('forum') as $forumid => $cm) {
if (!$cm->uservisible or !isset($forums[$forumid])) {
continue;
}
// Get the forum in question
$forum = $forums[$forumid];
// This is needed for functionality later on in the forum code. It is converted to an object
// because the cm_info is readonly from 2.6. This is a dirty hack because some other parts of the
// code were expecting an writeable object. See {@link forum_print_post()}.
$forum->cm = new stdClass();
foreach ($cm as $key => $value) {
$forum->cm->$key = $value;
}
// Check that either the current user can view the forum, or that the
// current user has capabilities over the requested user and the requested
// user can view the discussion
if (!has_capability('mod/forum:viewdiscussion', $cm->context) && !($hascapsonuser && has_capability('mod/forum:viewdiscussion', $cm->context, $user->id))) {
continue;
}
// This will contain forum specific where clauses
$forumsearchselect = array();
if (!$iscurrentuser && !$hascapsonuser) {
// Make sure we check group access
if (groups_get_activity_groupmode($cm, $course) == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $cm->context)) {
$groups = $modinfo->get_groups($cm->groupingid);
$groups[] = -1;
list($groupid_sql, $groupid_params) = $DB->get_in_or_equal($groups, SQL_PARAMS_NAMED, 'grps'.$forumid.'_');
$forumsearchparams = array_merge($forumsearchparams, $groupid_params);
$forumsearchselect[] = "d.groupid $groupid_sql";
}
// hidden timed discussions
if (!empty($CFG->forum_enabletimedposts) && !has_capability('mod/forum:viewhiddentimedposts', $cm->context)) {
$forumsearchselect[] = "(d.userid = :userid{$forumid} OR (d.timestart < :timestart{$forumid} AND (d.timeend = 0 OR d.timeend > :timeend{$forumid})))";
$forumsearchparams['userid'.$forumid] = $user->id;
$forumsearchparams['timestart'.$forumid] = $now;
$forumsearchparams['timeend'.$forumid] = $now;
}
// qanda access
if ($forum->type == 'qanda' && !has_capability('mod/forum:viewqandawithoutposting', $cm->context)) {
// We need to check whether the user has posted in the qanda forum.
$discussionspostedin = forum_discussions_user_has_posted_in($forum->id, $user->id);
if (!empty($discussionspostedin)) {
$forumonlydiscussions = array(); // Holds discussion ids for the discussions the user is allowed to see in this forum.
foreach ($discussionspostedin as $d) {
$forumonlydiscussions[] = $d->id;
}
list($discussionid_sql, $discussionid_params) = $DB->get_in_or_equal($forumonlydiscussions, SQL_PARAMS_NAMED, 'qanda'.$forumid.'_');
$forumsearchparams = array_merge($forumsearchparams, $discussionid_params);
$forumsearchselect[] = "(d.id $discussionid_sql OR p.parent = 0)";
} else {
$forumsearchselect[] = "p.parent = 0";
}
}
if (count($forumsearchselect) > 0) {
$forumsearchwhere[] = "(d.forum = :forum{$forumid} AND ".implode(" AND ", $forumsearchselect).")";
$forumsearchparams['forum'.$forumid] = $forumid;
} else {
$forumsearchfullaccess[] = $forumid;
}
} else {
// The current user/parent can see all of their own posts
$forumsearchfullaccess[] = $forumid;
}
}
}
// If we dont have any search conditions, and we don't have any forums where
// the user has full access then we just return the default.
if (empty($forumsearchwhere) && empty($forumsearchfullaccess)) {
return $return;
}
// Prepare a where condition for the full access forums.
if (count($forumsearchfullaccess) > 0) {
list($fullidsql, $fullidparams) = $DB->get_in_or_equal($forumsearchfullaccess, SQL_PARAMS_NAMED, 'fula');
$forumsearchparams = array_merge($forumsearchparams, $fullidparams);
$forumsearchwhere[] = "(d.forum $fullidsql)";
}
// Prepare SQL to both count and search.
// We alias user.id to useridx because we forum_posts already has a userid field and not aliasing this would break
// oracle and mssql.
$userfieldsapi = \core_user\fields::for_userpic();
$userfields = $userfieldsapi->get_sql('u', false, '', 'useridx', false)->selects;
$countsql = 'SELECT COUNT(*) ';
$selectsql = 'SELECT p.*, d.forum, d.name AS discussionname, '.$userfields.' ';
$wheresql = implode(" OR ", $forumsearchwhere);
if ($discussionsonly) {
if ($wheresql == '') {
$wheresql = 'p.parent = 0';
} else {
$wheresql = 'p.parent = 0 AND ('.$wheresql.')';
}
}
$sql = "FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {user} u ON u.id = p.userid
WHERE ($wheresql)
AND p.userid = :userid ";
$orderby = "ORDER BY p.modified DESC";
$forumsearchparams['userid'] = $user->id;
// Set the total number posts made by the requested user that the current user can see
$return->totalcount = $DB->count_records_sql($countsql.$sql, $forumsearchparams);
// Set the collection of posts that has been requested
$return->posts = $DB->get_records_sql($selectsql.$sql.$orderby, $forumsearchparams, $limitfrom, $limitnum);
// We need to build an array of forums for which posts will be displayed.
// We do this here to save the caller needing to retrieve them themselves before
// printing these forums posts. Given we have the forums already there is
// practically no overhead here.
foreach ($return->posts as $post) {
if (!array_key_exists($post->forum, $return->forums)) {
$return->forums[$post->forum] = $forums[$post->forum];
}
}
return $return;
}
/**
* Set the per-forum maildigest option for the specified user.
*
* @param stdClass $forum The forum to set the option for.
* @param int $maildigest The maildigest option.
* @param stdClass $user The user object. This defaults to the global $USER object.
* @throws invalid_digest_setting thrown if an invalid maildigest option is provided.
*/
function forum_set_user_maildigest($forum, $maildigest, $user = null) {
global $DB, $USER;
if (is_number($forum)) {
$forum = $DB->get_record('forum', array('id' => $forum));
}
if ($user === null) {
$user = $USER;
}
$course = $DB->get_record('course', array('id' => $forum->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id, false, MUST_EXIST);
$context = context_module::instance($cm->id);
// User must be allowed to see this forum.
require_capability('mod/forum:viewdiscussion', $context, $user->id);
// Validate the maildigest setting.
$digestoptions = forum_get_user_digest_options($user);
if (!isset($digestoptions[$maildigest])) {
throw new moodle_exception('invaliddigestsetting', 'mod_forum');
}
// Attempt to retrieve any existing forum digest record.
$subscription = $DB->get_record('forum_digests', array(
'userid' => $user->id,
'forum' => $forum->id,
));
// Create or Update the existing maildigest setting.
if ($subscription) {
if ($maildigest == -1) {
$DB->delete_records('forum_digests', array('forum' => $forum->id, 'userid' => $user->id));
} else if ($maildigest !== $subscription->maildigest) {
// Only update the maildigest setting if it's changed.
$subscription->maildigest = $maildigest;
$DB->update_record('forum_digests', $subscription);
}
} else {
if ($maildigest != -1) {
// Only insert the maildigest setting if it's non-default.
$subscription = new stdClass();
$subscription->forum = $forum->id;
$subscription->userid = $user->id;
$subscription->maildigest = $maildigest;
$subscription->id = $DB->insert_record('forum_digests', $subscription);
}
}
}
/**
* Determine the maildigest setting for the specified user against the
* specified forum.
*
* @param Array $digests An array of forums and user digest settings.
* @param stdClass $user The user object containing the id and maildigest default.
* @param int $forumid The ID of the forum to check.
* @return int The calculated maildigest setting for this user and forum.
*/
function forum_get_user_maildigest_bulk($digests, $user, $forumid) {
if (isset($digests[$forumid]) && isset($digests[$forumid][$user->id])) {
$maildigest = $digests[$forumid][$user->id];
if ($maildigest === -1) {
$maildigest = $user->maildigest;
}
} else {
$maildigest = $user->maildigest;
}
return $maildigest;
}
/**
* Retrieve the list of available user digest options.
*
* @param stdClass $user The user object. This defaults to the global $USER object.
* @return array The mapping of values to digest options.
*/
function forum_get_user_digest_options($user = null) {
global $USER;
// Revert to the global user object.
if ($user === null) {
$user = $USER;
}
$digestoptions = array();
$digestoptions['0'] = get_string('emaildigestoffshort', 'mod_forum');
$digestoptions['1'] = get_string('emaildigestcompleteshort', 'mod_forum');
$digestoptions['2'] = get_string('emaildigestsubjectsshort', 'mod_forum');
// We need to add the default digest option at the end - it relies on
// the contents of the existing values.
$digestoptions['-1'] = get_string('emaildigestdefault', 'mod_forum',
$digestoptions[$user->maildigest]);
// Resort the options to be in a sensible order.
ksort($digestoptions);
return $digestoptions;
}
/**
* Determine the current context if one was not already specified.
*
* If a context of type context_module is specified, it is immediately
* returned and not checked.
*
* @param int $forumid The ID of the forum
* @param context_module $context The current context.
* @return context_module The context determined
*/
function forum_get_context($forumid, $context = null) {
global $PAGE;
if (!$context || !($context instanceof context_module)) {
// Find out forum context. First try to take current page context to save on DB query.
if ($PAGE->cm && $PAGE->cm->modname === 'forum' && $PAGE->cm->instance == $forumid
&& $PAGE->context->contextlevel == CONTEXT_MODULE && $PAGE->context->instanceid == $PAGE->cm->id) {
$context = $PAGE->context;
} else {
$cm = get_coursemodule_from_instance('forum', $forumid);
$context = \context_module::instance($cm->id);
}
}
return $context;
}
/**
* Mark the activity completed (if required) and trigger the course_module_viewed event.
*
* @param stdClass $forum forum object
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @since Moodle 2.9
*/
function forum_view($forum, $course, $cm, $context) {
// Completion.
$completion = new completion_info($course);
$completion->set_module_viewed($cm);
// Trigger course_module_viewed event.
$params = array(
'context' => $context,
'objectid' => $forum->id
);
$event = \mod_forum\event\course_module_viewed::create($params);
$event->add_record_snapshot('course_modules', $cm);
$event->add_record_snapshot('course', $course);
$event->add_record_snapshot('forum', $forum);
$event->trigger();
}
/**
* Trigger the discussion viewed event
*
* @param stdClass $modcontext module context object
* @param stdClass $forum forum object
* @param stdClass $discussion discussion object
* @since Moodle 2.9
*/
function forum_discussion_view($modcontext, $forum, $discussion) {
$params = array(
'context' => $modcontext,
'objectid' => $discussion->id,
);
$event = \mod_forum\event\discussion_viewed::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->add_record_snapshot('forum', $forum);
$event->trigger();
}
/**
* Set the discussion to pinned and trigger the discussion pinned event
*
* @param stdClass $modcontext module context object
* @param stdClass $forum forum object
* @param stdClass $discussion discussion object
* @since Moodle 3.1
*/
function forum_discussion_pin($modcontext, $forum, $discussion) {
global $DB;
$DB->set_field('forum_discussions', 'pinned', FORUM_DISCUSSION_PINNED, array('id' => $discussion->id));
$params = array(
'context' => $modcontext,
'objectid' => $discussion->id,
'other' => array('forumid' => $forum->id)
);
$event = \mod_forum\event\discussion_pinned::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->trigger();
}
/**
* Set discussion to unpinned and trigger the discussion unpin event
*
* @param stdClass $modcontext module context object
* @param stdClass $forum forum object
* @param stdClass $discussion discussion object
* @since Moodle 3.1
*/
function forum_discussion_unpin($modcontext, $forum, $discussion) {
global $DB;
$DB->set_field('forum_discussions', 'pinned', FORUM_DISCUSSION_UNPINNED, array('id' => $discussion->id));
$params = array(
'context' => $modcontext,
'objectid' => $discussion->id,
'other' => array('forumid' => $forum->id)
);
$event = \mod_forum\event\discussion_unpinned::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->trigger();
}
/**
* Add nodes to myprofile page.
*
* @param \core_user\output\myprofile\tree $tree Tree object
* @param stdClass $user user object
* @param bool $iscurrentuser
* @param stdClass $course Course object
*
* @return bool
*/
function mod_forum_myprofile_navigation(core_user\output\myprofile\tree $tree, $user, $iscurrentuser, $course) {
if (isguestuser($user)) {
// The guest user cannot post, so it is not possible to view any posts.
// May as well just bail aggressively here.
return false;
}
$postsurl = new moodle_url('/mod/forum/user.php', array('id' => $user->id));
if (!empty($course)) {
$postsurl->param('course', $course->id);
}
$string = get_string('forumposts', 'mod_forum');
$node = new core_user\output\myprofile\node('miscellaneous', 'forumposts', $string, null, $postsurl);
$tree->add_node($node);
$discussionssurl = new moodle_url('/mod/forum/user.php', array('id' => $user->id, 'mode' => 'discussions'));
if (!empty($course)) {
$discussionssurl->param('course', $course->id);
}
$string = get_string('myprofileotherdis', 'mod_forum');
$node = new core_user\output\myprofile\node('miscellaneous', 'forumdiscussions', $string, null,
$discussionssurl);
$tree->add_node($node);
return true;
}
/**
* Checks whether the author's name and picture for a given post should be hidden or not.
*
* @param object $post The forum post.
* @param object $forum The forum object.
* @return bool
* @throws coding_exception
*/
function forum_is_author_hidden($post, $forum) {
if (!isset($post->parent)) {
throw new coding_exception('$post->parent must be set.');
}
if (!isset($forum->type)) {
throw new coding_exception('$forum->type must be set.');
}
if ($forum->type === 'single' && empty($post->parent)) {
return true;
}
return false;
}
/**
* Manage inplace editable saves.
*
* @param string $itemtype The type of item.
* @param int $itemid The ID of the item.
* @param mixed $newvalue The new value
* @return string
*/
function mod_forum_inplace_editable($itemtype, $itemid, $newvalue) {
global $DB, $PAGE;
if ($itemtype === 'digestoptions') {
// The itemid is the forumid.
$forum = $DB->get_record('forum', array('id' => $itemid), '*', MUST_EXIST);
$course = $DB->get_record('course', array('id' => $forum->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id, false, MUST_EXIST);
$context = context_module::instance($cm->id);
$PAGE->set_context($context);
require_login($course, false, $cm);
forum_set_user_maildigest($forum, $newvalue);
$renderer = $PAGE->get_renderer('mod_forum');
return $renderer->render_digest_options($forum, $newvalue);
}
}
/**
* Determine whether the specified forum's cutoff date is reached.
*
* @param stdClass $forum The forum
* @return bool
*/
function forum_is_cutoff_date_reached($forum) {
$entityfactory = \mod_forum\local\container::get_entity_factory();
$coursemoduleinfo = get_fast_modinfo($forum->course);
$cminfo = $coursemoduleinfo->instances['forum'][$forum->id];
$forumentity = $entityfactory->get_forum_from_stdclass(
$forum,
context_module::instance($cminfo->id),
$cminfo->get_course_module_record(),
$cminfo->get_course()
);
return $forumentity->is_cutoff_date_reached();
}
/**
* Determine whether the specified forum's due date is reached.
*
* @param stdClass $forum The forum
* @return bool
*/
function forum_is_due_date_reached($forum) {
$entityfactory = \mod_forum\local\container::get_entity_factory();
$coursemoduleinfo = get_fast_modinfo($forum->course);
$cminfo = $coursemoduleinfo->instances['forum'][$forum->id];
$forumentity = $entityfactory->get_forum_from_stdclass(
$forum,
context_module::instance($cminfo->id),
$cminfo->get_course_module_record(),
$cminfo->get_course()
);
return $forumentity->is_due_date_reached();
}
/**
* Determine whether the specified discussion is time-locked.
*
* @param stdClass $forum The forum that the discussion belongs to
* @param stdClass $discussion The discussion to test
* @return bool
*/
function forum_discussion_is_locked($forum, $discussion) {
$entityfactory = \mod_forum\local\container::get_entity_factory();
$coursemoduleinfo = get_fast_modinfo($forum->course);
$cminfo = $coursemoduleinfo->instances['forum'][$forum->id];
$forumentity = $entityfactory->get_forum_from_stdclass(
$forum,
context_module::instance($cminfo->id),
$cminfo->get_course_module_record(),
$cminfo->get_course()
);
$discussionentity = $entityfactory->get_discussion_from_stdclass($discussion);
return $forumentity->is_discussion_locked($discussionentity);
}
/**
* Check if the module has any update that affects the current user since a given time.
*
* @param cm_info $cm course module data
* @param int $from the time to check updates from
* @param array $filter if we need to check only specific updates
* @return stdClass an object with the different type of areas indicating if they were updated or not
* @since Moodle 3.2
*/
function forum_check_updates_since(cm_info $cm, $from, $filter = array()) {
$context = $cm->context;
$updates = new stdClass();
if (!has_capability('mod/forum:viewdiscussion', $context)) {
return $updates;
}
$updates = course_check_module_updates_since($cm, $from, array(), $filter);
// Check if there are new discussions in the forum.
$updates->discussions = (object) array('updated' => false);
$discussions = forum_get_discussions($cm, '', false, -1, -1, true, -1, 0, FORUM_POSTS_ALL_USER_GROUPS, $from);
if (!empty($discussions)) {
$updates->discussions->updated = true;
$updates->discussions->itemids = array_keys($discussions);
}
return $updates;
}
/**
* Check if the user can create attachments in a forum.
* @param stdClass $forum forum object
* @param stdClass $context context object
* @return bool true if the user can create attachments, false otherwise
* @since Moodle 3.3
*/
function forum_can_create_attachment($forum, $context) {
// If maxbytes == 1 it means no attachments at all.
if (empty($forum->maxattachments) || $forum->maxbytes == 1 ||
!has_capability('mod/forum:createattachment', $context)) {
return false;
}
return true;
}
/**
* Get icon mapping for font-awesome.
*
* @return array
*/
function mod_forum_get_fontawesome_icon_map() {
return [
'mod_forum:i/pinned' => 'fa-map-pin',
'mod_forum:t/selected' => 'fa-check',
'mod_forum:t/subscribed' => 'fa-envelope-o',
'mod_forum:t/unsubscribed' => 'fa-envelope-open-o',
'mod_forum:t/star' => 'fa-star',
];
}
/**
* Callback function that determines whether an action event should be showing its item count
* based on the event type and the item count.
*
* @param calendar_event $event The calendar event.
* @param int $itemcount The item count associated with the action event.
* @return bool
*/
function mod_forum_core_calendar_event_action_shows_item_count(calendar_event $event, $itemcount = 0) {
// Always show item count for forums if item count is greater than 1.
// If only one action is required than it is obvious and we don't show it for other modules.
return $itemcount > 1;
}
/**
* This function receives a calendar event and returns the action associated with it, or null if there is none.
*
* This is used by block_myoverview in order to display the event appropriately. If null is returned then the event
* is not displayed on the block.
*
* @param calendar_event $event
* @param \core_calendar\action_factory $factory
* @param int $userid User id to use for all capability checks, etc. Set to 0 for current user (default).
* @return \core_calendar\local\event\entities\action_interface|null
*/
function mod_forum_core_calendar_provide_event_action(calendar_event $event,
\core_calendar\action_factory $factory,
int $userid = 0) {
global $DB, $USER;
if (!$userid) {
$userid = $USER->id;
}
$cm = get_fast_modinfo($event->courseid, $userid)->instances['forum'][$event->instance];
if (!$cm->uservisible) {
// The module is not visible to the user for any reason.
return null;
}
$context = context_module::instance($cm->id);
if (!has_capability('mod/forum:viewdiscussion', $context, $userid)) {
return null;
}
$completion = new \completion_info($cm->get_course());
$completiondata = $completion->get_data($cm, false, $userid);
if ($completiondata->completionstate != COMPLETION_INCOMPLETE) {
return null;
}
// Get action itemcount.
$itemcount = 0;
$forum = $DB->get_record('forum', array('id' => $cm->instance));
$postcountsql = "
SELECT
COUNT(1)
FROM
{forum_posts} fp
INNER JOIN {forum_discussions} fd ON fp.discussion=fd.id
WHERE
fp.userid=:userid AND fd.forum=:forumid";
$postcountparams = array('userid' => $userid, 'forumid' => $forum->id);
if ($forum->completiondiscussions) {
$count = $DB->count_records('forum_discussions', array('forum' => $forum->id, 'userid' => $userid));
$itemcount += ($forum->completiondiscussions >= $count) ? ($forum->completiondiscussions - $count) : 0;
}
if ($forum->completionreplies) {
$count = $DB->get_field_sql( $postcountsql.' AND fp.parent<>0', $postcountparams);
$itemcount += ($forum->completionreplies >= $count) ? ($forum->completionreplies - $count) : 0;
}
if ($forum->completionposts) {
$count = $DB->get_field_sql($postcountsql, $postcountparams);
$itemcount += ($forum->completionposts >= $count) ? ($forum->completionposts - $count) : 0;
}
// Well there is always atleast one actionable item (view forum, etc).
$itemcount = $itemcount > 0 ? $itemcount : 1;
return $factory->create_instance(
get_string('view'),
new \moodle_url('/mod/forum/view.php', ['id' => $cm->id]),
$itemcount,
true
);
}
/**
* Add a get_coursemodule_info function in case any forum type wants to add 'extra' information
* for the course (see resource).
*
* Given a course_module object, this function returns any "extra" information that may be needed
* when printing this activity in a course listing. See get_array_of_activities() in course/lib.php.
*
* @param stdClass $coursemodule The coursemodule object (record).
* @return cached_cm_info An object on information that the courses
* will know about (most noticeably, an icon).
*/
function forum_get_coursemodule_info($coursemodule) {
global $DB;
$dbparams = ['id' => $coursemodule->instance];
$fields = 'id, name, intro, introformat, completionposts, completiondiscussions, completionreplies, duedate, cutoffdate';
if (!$forum = $DB->get_record('forum', $dbparams, $fields)) {
return false;
}
$result = new cached_cm_info();
$result->name = $forum->name;
if ($coursemodule->showdescription) {
// Convert intro to html. Do not filter cached version, filters run at display time.
$result->content = format_module_intro('forum', $forum, $coursemodule->id, false);
}
// Populate the custom completion rules as key => value pairs, but only if the completion mode is 'automatic'.
if ($coursemodule->completion == COMPLETION_TRACKING_AUTOMATIC) {
$result->customdata['customcompletionrules']['completiondiscussions'] = $forum->completiondiscussions;
$result->customdata['customcompletionrules']['completionreplies'] = $forum->completionreplies;
$result->customdata['customcompletionrules']['completionposts'] = $forum->completionposts;
}
// Populate some other values that can be used in calendar or on dashboard.
if ($forum->duedate) {
$result->customdata['duedate'] = $forum->duedate;
}
if ($forum->cutoffdate) {
$result->customdata['cutoffdate'] = $forum->cutoffdate;
}
return $result;
}
/**
* Callback which returns human-readable strings describing the active completion custom rules for the module instance.
*
* @param cm_info|stdClass $cm object with fields ->completion and ->customdata['customcompletionrules']
* @return array $descriptions the array of descriptions for the custom rules.
*/
function mod_forum_get_completion_active_rule_descriptions($cm) {
// Values will be present in cm_info, and we assume these are up to date.
if (empty($cm->customdata['customcompletionrules'])
|| $cm->completion != COMPLETION_TRACKING_AUTOMATIC) {
return [];
}
$descriptions = [];
foreach ($cm->customdata['customcompletionrules'] as $key => $val) {
switch ($key) {
case 'completiondiscussions':
if (!empty($val)) {
$descriptions[] = get_string('completiondiscussionsdesc', 'forum', $val);
}
break;
case 'completionreplies':
if (!empty($val)) {
$descriptions[] = get_string('completionrepliesdesc', 'forum', $val);
}
break;
case 'completionposts':
if (!empty($val)) {
$descriptions[] = get_string('completionpostsdesc', 'forum', $val);
}
break;
default:
break;
}
}
return $descriptions;
}
/**
* Check whether the forum post is a private reply visible to this user.
*
* @param stdClass $post The post to check.
* @param cm_info $cm The context module instance.
* @return bool Whether the post is visible in terms of private reply configuration.
*/
function forum_post_is_visible_privately($post, $cm) {
global $USER;
if (!empty($post->privatereplyto)) {
// Allow the user to see the private reply if:
// * they hold the permission;
// * they are the author; or
// * they are the intended recipient.
$cansee = false;
$cansee = $cansee || ($post->userid == $USER->id);
$cansee = $cansee || ($post->privatereplyto == $USER->id);
$cansee = $cansee || has_capability('mod/forum:readprivatereplies', context_module::instance($cm->id));
return $cansee;
}
return true;
}
/**
* Check whether the user can reply privately to the parent post.
*
* @param \context_module $context
* @param \stdClass $parent
* @return bool
*/
function forum_user_can_reply_privately(\context_module $context, \stdClass $parent) : bool {
if ($parent->privatereplyto) {
// You cannot reply privately to a post which is, itself, a private reply.
return false;
}
return has_capability('mod/forum:postprivatereply', $context);
}
/**
* This function calculates the minimum and maximum cutoff values for the timestart of
* the given event.
*
* It will return an array with two values, the first being the minimum cutoff value and
* the second being the maximum cutoff value. Either or both values can be null, which
* indicates there is no minimum or maximum, respectively.
*
* If a cutoff is required then the function must return an array containing the cutoff
* timestamp and error string to display to the user if the cutoff value is violated.
*
* A minimum and maximum cutoff return value will look like:
* [
* [1505704373, 'The date must be after this date'],
* [1506741172, 'The date must be before this date']
* ]
*
* @param calendar_event $event The calendar event to get the time range for
* @param stdClass $forum The module instance to get the range from
* @return array Returns an array with min and max date.
*/
function mod_forum_core_calendar_get_valid_event_timestart_range(\calendar_event $event, \stdClass $forum) {
global $CFG;
require_once($CFG->dirroot . '/mod/forum/locallib.php');
$mindate = null;
$maxdate = null;
if ($event->eventtype == FORUM_EVENT_TYPE_DUE) {
if (!empty($forum->cutoffdate)) {
$maxdate = [
$forum->cutoffdate,
get_string('cutoffdatevalidation', 'forum'),
];
}
}
return [$mindate, $maxdate];
}
/**
* This function will update the forum module according to the
* event that has been modified.
*
* It will set the timeclose value of the forum instance
* according to the type of event provided.
*
* @throws \moodle_exception
* @param \calendar_event $event
* @param stdClass $forum The module instance to get the range from
*/
function mod_forum_core_calendar_event_timestart_updated(\calendar_event $event, \stdClass $forum) {
global $CFG, $DB;
require_once($CFG->dirroot . '/mod/forum/locallib.php');
if ($event->eventtype != FORUM_EVENT_TYPE_DUE) {
return;
}
$courseid = $event->courseid;
$modulename = $event->modulename;
$instanceid = $event->instance;
// Something weird going on. The event is for a different module so
// we should ignore it.
if ($modulename != 'forum') {
return;
}
if ($forum->id != $instanceid) {
return;
}
$coursemodule = get_fast_modinfo($courseid)->instances[$modulename][$instanceid];
$context = context_module::instance($coursemodule->id);
// The user does not have the capability to modify this activity.
if (!has_capability('moodle/course:manageactivities', $context)) {
return;
}
if ($event->eventtype == FORUM_EVENT_TYPE_DUE) {
if ($forum->duedate != $event->timestart) {
$forum->duedate = $event->timestart;
$forum->timemodified = time();
// Persist the instance changes.
$DB->update_record('forum', $forum);
$event = \core\event\course_module_updated::create_from_cm($coursemodule, $context);
$event->trigger();
}
}
}
/**
* Fetch the data used to display the discussions on the current page.
*
* @param \mod_forum\local\entities\forum $forum The forum entity
* @param stdClass $user The user to render for
* @param int[]|null $groupid The group to render
* @param int|null $sortorder The sort order to use when selecting the discussions in the list
* @param int|null $pageno The zero-indexed page number to use
* @param int|null $pagesize The number of discussions to show on the page
* @return array The data to use for display
*/
function mod_forum_get_discussion_summaries(\mod_forum\local\entities\forum $forum, stdClass $user, ?int $groupid, ?int $sortorder,
?int $pageno = 0, ?int $pagesize = 0) {
$vaultfactory = mod_forum\local\container::get_vault_factory();
$discussionvault = $vaultfactory->get_discussions_in_forum_vault();
$managerfactory = mod_forum\local\container::get_manager_factory();
$capabilitymanager = $managerfactory->get_capability_manager($forum);
$groupids = mod_forum_get_groups_from_groupid($forum, $user, $groupid);
if (null === $groupids) {
return $discussions = $discussionvault->get_from_forum_id(
$forum->get_id(),
$capabilitymanager->can_view_hidden_posts($user),
$user->id,
$sortorder,
$pagesize,
$pageno * $pagesize);
} else {
return $discussions = $discussionvault->get_from_forum_id_and_group_id(
$forum->get_id(),
$groupids,
$capabilitymanager->can_view_hidden_posts($user),
$user->id,
$sortorder,
$pagesize,
$pageno * $pagesize);
}
}
/**
* Get a count of all discussions in a forum.
*
* @param \mod_forum\local\entities\forum $forum The forum entity
* @param stdClass $user The user to render for
* @param int $groupid The group to render
* @return int The number of discussions in a forum
*/
function mod_forum_count_all_discussions(\mod_forum\local\entities\forum $forum, stdClass $user, ?int $groupid) {
$managerfactory = mod_forum\local\container::get_manager_factory();
$capabilitymanager = $managerfactory->get_capability_manager($forum);
$vaultfactory = mod_forum\local\container::get_vault_factory();
$discussionvault = $vaultfactory->get_discussions_in_forum_vault();
$groupids = mod_forum_get_groups_from_groupid($forum, $user, $groupid);
if (null === $groupids) {
return $discussionvault->get_total_discussion_count_from_forum_id(
$forum->get_id(),
$capabilitymanager->can_view_hidden_posts($user),
$user->id);
} else {
return $discussionvault->get_total_discussion_count_from_forum_id_and_group_id(
$forum->get_id(),
$groupids,
$capabilitymanager->can_view_hidden_posts($user),
$user->id);
}
}
/**
* Get the list of groups to show based on the current user and requested groupid.
*
* @param \mod_forum\local\entities\forum $forum The forum entity
* @param stdClass $user The user viewing
* @param int $groupid The groupid requested
* @return array The list of groups to show
*/
function mod_forum_get_groups_from_groupid(\mod_forum\local\entities\forum $forum, stdClass $user, ?int $groupid) : ?array {
$effectivegroupmode = $forum->get_effective_group_mode();
if (empty($effectivegroupmode)) {
// This forum is not in a group mode. Show all posts always.
return null;
}
if (null == $groupid) {
$managerfactory = mod_forum\local\container::get_manager_factory();
$capabilitymanager = $managerfactory->get_capability_manager($forum);
// No group was specified.
$showallgroups = (VISIBLEGROUPS == $effectivegroupmode);
$showallgroups = $showallgroups || $capabilitymanager->can_access_all_groups($user);
if ($showallgroups) {
// Return null to show all groups.
return null;
} else {
// No group was specified. Only show the users current groups.
return array_keys(
groups_get_all_groups(
$forum->get_course_id(),
$user->id,
$forum->get_course_module_record()->groupingid
)
);
}
} else {
// A group was specified. Just show that group.
return [$groupid];
}
}
/**
* Return a list of all the user preferences used by mod_forum.
*
* @return array
*/
function mod_forum_user_preferences() {
$vaultfactory = \mod_forum\local\container::get_vault_factory();
$discussionlistvault = $vaultfactory->get_discussions_in_forum_vault();
$preferences = array();
$preferences['forum_discussionlistsortorder'] = array(
'null' => NULL_NOT_ALLOWED,
'default' => $discussionlistvault::SORTORDER_LASTPOST_DESC,
'type' => PARAM_INT,
'choices' => array(
$discussionlistvault::SORTORDER_LASTPOST_DESC,
$discussionlistvault::SORTORDER_LASTPOST_ASC,
$discussionlistvault::SORTORDER_CREATED_DESC,
$discussionlistvault::SORTORDER_CREATED_ASC,
$discussionlistvault::SORTORDER_REPLIES_DESC,
$discussionlistvault::SORTORDER_REPLIES_ASC
)
);
$preferences['forum_useexperimentalui'] = [
'null' => NULL_NOT_ALLOWED,
'default' => false,
'type' => PARAM_BOOL
];
return $preferences;
}
/**
* Lists all gradable areas for the advanced grading methods gramework.
*
* @return array('string'=>'string') An array with area names as keys and descriptions as values
*/
function forum_grading_areas_list() {
return [
'forum' => get_string('grade_forum_header', 'forum'),
];
}
/**
* Callback to fetch the activity event type lang string.
*
* @param string $eventtype The event type.
* @return lang_string The event type lang string.
*/
function mod_forum_core_calendar_get_event_action_string(string $eventtype): string {
global $CFG;
require_once($CFG->dirroot . '/mod/forum/locallib.php');
$modulename = get_string('modulename', 'forum');
if ($eventtype == FORUM_EVENT_TYPE_DUE) {
return get_string('calendardue', 'forum', $modulename);
} else {
return get_string('requiresaction', 'calendar', $modulename);
}
}
/**
* This callback will check the provided instance of this module
* and make sure there are up-to-date events created for it.
*
* @param int $courseid Not used.
* @param stdClass $instance Forum module instance.
* @param stdClass $cm Course module object.
*/
function forum_refresh_events(int $courseid, stdClass $instance, stdClass $cm): void {
global $CFG;
// This function is called by cron and we need to include the locallib for calls further down.
require_once($CFG->dirroot . '/mod/forum/locallib.php');
forum_update_calendar($instance, $cm->id);
}
